{"title":"Magnet Wires","description":"\u003cp\u003e\u003cstrong\u003eDiscover Premium Copper \u0026amp; Magnet Wire at \u003ca href=\"https:\/\/link.wtturl.cn\/?target=https%3A%2F%2FRapidKeen.com\u0026amp;scene=im\u0026amp;aid=582478\u0026amp;lang=zh\"\u003eRapidKeen.com\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWelcome to our Magnet Wire collection — your source for high-performance \u003cstrong\u003eenameled wire\u003c\/strong\u003e built for precision and reliability. From \u003cstrong\u003eenameled copper magnet wire\u003c\/strong\u003e for motor windings to \u003cstrong\u003einsulated copper wire\u003c\/strong\u003e for transformers, inductors, and custom coils, every spool is engineered for consistent conductivity and long-lasting insulation.\u003c\/p\u003e\n\u003cp\u003eOur \u003cstrong\u003eenameled magnet wire\u003c\/strong\u003e features a smooth, uniform coating that prevents short circuits and resists corrosion, making it ideal for \u003cstrong\u003etight coil winding\u003c\/strong\u003e and \u003cstrong\u003ehigh-voltage applications\u003c\/strong\u003e. Whether you're rewinding a motor, building an inductor, or assembling electromagnetic equipment, you'll find the right gauge and temper for the job.\u003c\/p\u003e\n\u003cp\u003eAt RapidKeen, quality and customer satisfaction come first. Explore our range of \u003cstrong\u003ecopper wire and magnet wire\u003c\/strong\u003e — and experience durability, efficiency, and value in every foot.\u003c\/p\u003e","products":[{"product_id":"magnet-wire-44-awg-enameled-copper-wire","title":"Magnet Wire 44 AWG Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 16px;padding-bottom:10px;border-bottom:3px solid #00AAFF;line-height:1.35}\n.rk-mw h3{font-size:20px;color:#005969;margin:28px 0 10px;line-height:1.4}\n.rk-mw h4{font-size:17px;color:#0a7a8c;margin:20px 0 8px}\n.rk-mw h5{font-size:15px;color:#333;margin:16px 0 6px}\n.rk-mw h6{font-size:14px;color:#555;margin:14px 0 6px;text-transform:uppercase;letter-spacing:.5px}\n.rk-mw p{margin:0 0 14px}\n.rk-mw ul,.rk-mw ol{margin:0 0 16px;padding-left:22px}\n.rk-mw li{margin-bottom:6px}\n.rk-mw a{color:#0078a8;text-decoration:none}\n.rk-mw a:hover{text-decoration:underline}\n.rk-mw .rk-lead{font-size:17px;color:#333;background:#f3fafb;border-left:4px solid #00AAFF;padding:16px 20px;border-radius:0 8px 8px 0;margin:0 0 24px}\n.rk-mw .rk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-card{background:#fafdfe;border:1px solid #e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3,.rk-mw .rk-card h4{margin-top:0}\n.rk-mw .rk-table-wrap{overflow-x:auto;margin:16px 0 24px;-webkit-overflow-scrolling:touch}\n.rk-mw table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}\n.rk-mw th{background:#005969;color:#fff;text-align:left;padding:12px 14px;font-weight:600;white-space:nowrap}\n.rk-mw td{padding:11px 14px;border-bottom:1px solid #e6eef0;vertical-align:top}\n.rk-mw tr:nth-child(even) td{background:#f6fbfc}\n.rk-mw .rk-note{background:#fff8e6;border-left:4px solid #f5b301;padding:14px 18px;border-radius:0 8px 8px 0;margin:16px 0;font-size:15px}\n.rk-mw .rk-kw{font-weight:600;color:#005969}\n.rk-mw .rk-process{counter-reset:step;list-style:none;padding-left:0}\n.rk-mw .rk-process li{position:relative;padding:0 0 18px 48px;border-left:2px solid #b3e5fc;margin-left:16px}\n.rk-mw .rk-process li::before{counter-increment:step;content:counter(step);position:absolute;left:-17px;top:0;width:32px;height:32px;background:#00AAFF;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}\n.rk-mw .rk-process li:last-child{border-left:2px solid transparent;padding-bottom:0}\n.rk-mw .rk-process h4{margin:4px 0 6px}\n.rk-mw .rk-faq{border:1px solid #e1f0f2;border-radius:10px;margin-bottom:12px;overflow:hidden}\n.rk-mw .rk-faq h3{margin:0;padding:16px 20px;background:#f3fafb;font-size:17px}\n.rk-mw .rk-faq h3::before{content:\"Q \";color:#00AAFF;font-weight:700}\n.rk-mw .rk-faq .rk-a{padding:0 20px 16px}\n@media(max-width:900px){.rk-mw .rk-grid{grid-template-columns:repeat(2,1fr)}}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid,.rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n  .rk-mw table{font-size:14px}\n  .rk-mw th,.rk-mw td{padding:9px 10px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\u003cp class=\"rk-lead\"\u003e\u003cspan class=\"rk-kw\"\u003eMagnet wire\u003c\/span\u003e — also known as \u003cspan class=\"rk-kw\"\u003eenameled copper wire\u003c\/span\u003e, winding wire, or enamel-coated copper wire — is a copper conductor covered by a thin, tough polymer film that lets thousands of turns sit side by side in a coil without short-circuiting. It is the fundamental conductor inside every motor, transformer, inductor, and electromagnetic device that converts electricity into motion, voltage, or magnetic force.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e is an insulated electrical conductor, almost always copper (and sometimes aluminum), designed to be wound into tight coils. The term \"magnet wire\" is the standard industry name in North America and is defined by the NEMA MW 1000 standard; internationally the same product is called \u003cstrong\u003eenameled wire\u003c\/strong\u003e or \u003cstrong\u003ewinding wire\u003c\/strong\u003e. Despite the word \"enamel,\" the insulation is not glassy porcelain or paint — it is one or more layers of high-performance polymer film applied and cured in precise passes.\u003c\/p\u003e\n\u003cp\u003eThe key difference between \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e and ordinary insulated copper wire is insulation thickness. A typical plastic-jacketed wire adds a millimeter or more of insulation, while magnet wire's enamel film is only a few micrometers thick. That is what allows compact, high-density coil windings where the copper fill factor — the share of cross-section actually occupied by copper — is as high as possible.\u003c\/p\u003e\n\u003ch3\u003eThe Conductor: High-Purity Copper\u003c\/h3\u003e\n\u003cp\u003eThe conductor is electrolytically refined or oxygen-free copper, selected for its superior electrical conductivity, thermal conductivity, and ductility. Copper's low resistance cuts energy loss and heat rise, and after annealing it becomes soft enough to draw down to very fine gauges and wind around sharp bends without work-hardening or breaking.\u003c\/p\u003e\n\u003ch3\u003eThe Insulation: Enamel Polymer Film\u003c\/h3\u003e\n\u003cp\u003eThe enamel coating is applied as a liquid varnish and cured at high temperature, building up a uniform, flexible, dielectric film in multiple passes. Depending on the chemistry, the insulation provides a specific balance of thermal endurance, dielectric strength, solderability, abrasion resistance, and resistance to solvents and refrigerants. Some constructions add a nylon overcoat or a self-bonding top layer for heat-activated adhesion.\u003c\/p\u003e\n\u003ch3\u003eHow Enameled Copper Wire Works in a Coil\u003c\/h3\u003e\n\u003cp\u003eWhen current flows through a coil of magnet wire, every turn contributes to a concentrated electromagnetic field. The enamel film forces current to follow the long helical path of the conductor instead of jumping between touching turns. The thinner and more consistent the insulation, the more copper fits into the same winding window — and the stronger, smaller, and more efficient the resulting motor, transformer, or solenoid.\u003c\/p\u003e\n\u003ch2\u003eTypes of Enamel Insulation\u003c\/h2\u003e\n\u003cp\u003eChoosing the right enamel chemistry is the most important decision when selecting magnet wire. Each insulation type is engineered for a different temperature range, soldering method, and operating environment.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyurethane (UEW \/ PUR)\u003c\/h3\u003e\n\u003cp\u003eSolderable directly at moderate temperatures without stripping the enamel — the film dissolves into the solder joint. Best for small transformers, relays, timers, clock coils, magnetic heads, and fine-wire electronics where easy termination matters.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester (PEW)\u003c\/h3\u003e\n\u003cp\u003eThe most widely used general-purpose enamel, offering a dense, uniform film with good dielectric strength and mechanical toughness at a competitive cost. The workhorse for common motors, appliances, and general winding applications.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 155°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester-Imide (EIW)\u003c\/h3\u003e\n\u003cp\u003eAn upgraded polyester with superior heat shock resistance, solvent resistance, and refrigerant compatibility. Common in hermetic motors, compressors, automotive alternators, and appliances exposed to high operating temperatures.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyamide-Imide (AIW)\u003c\/h3\u003e\n\u003cp\u003eThe premium high-temperature enamel, with exceptional thermal endurance, abrasion resistance, and resistance to overload conditions. Often used as a topcoat over polyester-imide for the highest performance in traction motors, industrial drives, and aerospace windings.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 200°C to 220°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eSelf-Bonding (Bondable)\u003c\/h3\u003e\n\u003cp\u003eMagnet wire with a thermoplastic or thermosetting overcoat that fuses adjacent turns when heated, producing a self-supporting coil without an impregnating varnish. Ideal for voice coils, speaker coils, sensor coils, and complex free-standing windings.\u003c\/p\u003e\n\u003ch4\u003eActivation\u003c\/h4\u003e\n\u003cp\u003eHeat, solvent, or resistance heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eNylon-Overcoated\u003c\/h3\u003e\n\u003cp\u003eA thin polyamide top layer added over the base enamel to improve winding lubricity, abrasion resistance, and chemical resistance. Frequently specified for high-speed automatic winding where the wire must survive tight, fast lay-down.\u003c\/p\u003e\n\u003ch4\u003eTypical base coats\u003c\/h4\u003e\n\u003cp\u003ePolyester or polyester-imide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire Forms and Shapes\u003c\/h2\u003e\n\u003cp\u003eEnameled copper wire is supplied in several conductor geometries to match different winding techniques and slot-fill requirements.\u003c\/p\u003e\n\u003ch3\u003eRound Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eThe standard form for the majority of motor, transformer, relay, and coil applications. Round magnet wire is available across a very wide AWG range — from fine gauges under 50 AWG for precision electronics to heavy gauges above 10 AWG for large motor and transformer windings.\u003c\/p\u003e\n\u003ch3\u003eRectangular and Flat Magnet Wire\u003c\/h3\u003e\n\u003cp\u003eRectangular or square enameled copper wire packs more copper into a given slot than round wire, raising the fill factor and improving thermal performance. It is used in high-power traction motors, large generator coils, welding transformers, and high-current inductors where space efficiency is critical.\u003c\/p\u003e\n\u003ch3\u003eMulti-Strand and Litz Constructions\u003c\/h3\u003e\n\u003cp\u003eFor high-frequency applications, multiple fine enameled wires are twisted or braided together into \u003cstrong\u003eLitz wire\u003c\/strong\u003e to reduce skin-effect and proximity-effect losses. Stranded magnet wire constructions also offer greater flexibility for bend-intensive coil designs.\u003c\/p\u003e\n\u003ch2\u003eTemperature Class and Insulation Build\u003c\/h2\u003e\n\u003ch3\u003eUnderstanding Thermal Class\u003c\/h3\u003e\n\u003cp\u003eEvery enameled copper wire carries a thermal class that indicates the maximum sustained temperature the insulation can endure over a rated service life — commonly 20,000 hours. Choosing a class with headroom above the actual operating temperature extends motor and transformer life.\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Class\u003c\/th\u003e\n\u003cth\u003eMaximum Sustained Temperature\u003c\/th\u003e\n\u003cth\u003eTypical Enamel Chemistry\u003c\/th\u003e\n\u003cth\u003eCommon Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e130°C (Class B)\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003ctd\u003ePolyurethane, Polyester\u003c\/td\u003e\n\u003ctd\u003eSmall transformers, relays, general coils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e155°C (Class F)\u003c\/td\u003e\n\u003ctd\u003e155°C\u003c\/td\u003e\n\u003ctd\u003ePolyester, Polyurethane\u003c\/td\u003e\n\u003ctd\u003eAppliance motors, fans, lighting ballasts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e180°C (Class H)\u003c\/td\u003e\n\u003ctd\u003e180°C\u003c\/td\u003e\n\u003ctd\u003ePolyester-Imide\u003c\/td\u003e\n\u003ctd\u003eCompressors, automotive alternators, power tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200°C (Class N)\u003c\/td\u003e\n\u003ctd\u003e200°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide over EIW\u003c\/td\u003e\n\u003ctd\u003eTraction motors, industrial drives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e220°C (Class R)\u003c\/td\u003e\n\u003ctd\u003e220°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide, aromatic polyimide\u003c\/td\u003e\n\u003ctd\u003eAerospace, high-performance generators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eInsulation Build: Single, Heavy, and Triple\u003c\/h3\u003e\n\u003cp\u003e\"Build\" refers to the total thickness of the enamel film. A heavier build increases dielectric withstand voltage but slightly reduces copper fill factor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle build\u003c\/strong\u003e — thinnest insulation; maximum copper density for low-voltage, well-supported windings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy build\u003c\/strong\u003e — the most common choice; added dielectric margin for typical motor and transformer voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple build\u003c\/strong\u003e — thickest film; specified for high-voltage or surge-prone windings and for inverter-fed motors exposed to fast voltage pulses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow Magnet Wire Is Made\u003c\/h2\u003e\n\u003col class=\"rk-process\"\u003e\n\u003cli\u003e\n\u003ch4\u003eCopper Rod Breakdown and Wire Drawing\u003c\/h4\u003e\n\u003cp\u003eProduction starts with a copper rod that is pulled through a series of diamond or tungsten-carbide dies, reducing its cross-section in stages until it reaches the target AWG diameter. Fine gauges may go through dozens of drawing steps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eContinuous Annealing\u003c\/h4\u003e\n\u003cp\u003eThe drawn wire is passed through a controlled-atmosphere annealing furnace to soften the copper, restore its ductility, and remove work-hardening introduced during drawing. Clean, oxide-free copper is essential for good enamel adhesion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eEnamel Application and Curing\u003c\/h4\u003e\n\u003cp\u003eLiquid enamel varnish is applied by felt or die and cured in a long, temperature-controlled oven. The wire makes multiple passes — often 6 to 12 or more — building the film layer by layer to the required build and ensuring complete coverage without pinholes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eLubrication and Spooling\u003c\/h4\u003e\n\u003cp\u003eA thin surface lubricant may be applied to help the wire feed smoothly through high-speed winding machines. The finished enameled copper wire is then spooled onto plastic or metal reels in continuous lengths.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eIn-Line Quality Control\u003c\/h4\u003e\n\u003cp\u003eEvery spool is checked for continuity, insulation defects (pinholes and bare spots via high-voltage spark testing), dimensional consistency, surface finish, and adhesion. Thermal and dielectric properties are verified on sampled production lots.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eApplications of Enameled Copper Wire\u003c\/h2\u003e\n\u003cp\u003eBecause roughly 90% of all electrical energy passes through a motor, transformer, or coil at some point, magnet wire is one of the most widely used conductors in the modern economy.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eElectric Motors and Generators\u003c\/h3\u003e\n\u003cp\u003eIndustrial motors, EV traction motors, appliance motors, servo motors, fans, pumps, and portable generators all rely on enameled copper wire in their stator and rotor windings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eTransformers and Inductors\u003c\/h3\u003e\n\u003cp\u003ePower transformers, distribution transformers, high-frequency switch-mode transformers, toroidal inductors, chokes, and ballasts use solderable or high-temperature magnet wire depending on frequency and voltage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eAutomotive Electrification\u003c\/h3\u003e\n\u003cp\u003eAlternators, starter motors, electric power steering, ABS actuators, on-board chargers, and EV drivetrain components use high-temperature polyester-imide and polyamide-imide magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRelays, Solenoids, and Actuators\u003c\/h3\u003e\n\u003cp\u003eFine-gauge polyurethane magnet wire is wound into relay coils, solenoid valves, contactors, and linear actuators where direct solderability and compact size matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsumer Electronics and Audio\u003c\/h3\u003e\n\u003cp\u003eSpeaker voice coils, headphone drivers, guitar pickups, watch coils, camera actuators, wireless-charging coils, and magnetic sensor coils use self-bonding and fine-gauge enameled wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRenewable Energy and Industry\u003c\/h3\u003e\n\u003cp\u003eWind turbine generators, solar inverters, welding equipment, induction heaters, UPS systems, and magnet assemblies depend on heavy-build, high-temperature magnet wire for long service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRange \/ Options\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eMagnet Wire \/ Enameled Copper Wire \/ Winding Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor material\u003c\/td\u003e\n\u003ctd\u003eHigh-purity copper (round, rectangular, or stranded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAWG range\u003c\/td\u003e\n\u003ctd\u003eFine gauges (50+ AWG) through heavy gauges (4–10 AWG and larger); metric diameters also available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation chemistry\u003c\/td\u003e\n\u003ctd\u003ePolyurethane (UEW), Polyester (PEW), Polyester-Imide (EIW), Polyamide-Imide (AIW), composite dual coats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal class\u003c\/td\u003e\n\u003ctd\u003e130°C \/ 155°C \/ 180°C \/ 200°C \/ 220°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation build\u003c\/td\u003e\n\u003ctd\u003eSingle, heavy, triple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercoat options\u003c\/td\u003e\n\u003ctd\u003eNylon overcoat, self-bonding overcoat, paraffin or nylon lubricant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor shape\u003c\/td\u003e\n\u003ctd\u003eRound, rectangular \/ flat, square, Litz \/ stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpool packaging\u003c\/td\u003e\n\u003ctd\u003ePlastic spools, metal reels, barrel pack; custom put-ups and continuous lengths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards compliance\u003c\/td\u003e\n\u003ctd\u003eNEMA MW 1000, IEC 60317, JIS C 3202; RoHS and REACH compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolderability\u003c\/td\u003e\n\u003ctd\u003eDirect-solderable on polyurethane types; other types require mechanical or thermal stripping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical colors\u003c\/td\u003e\n\u003ctd\u003eNatural amber\/clear; red, green, blue, and other colors available for identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"rk-note\"\u003eAWG (American Wire Gauge) is the standard sizing system used in North America. If your design uses metric diameters, we can cross-reference and supply to the equivalent AWG size.\u003c\/p\u003e\n\u003ch2\u003eValue-Added Processing Services\u003c\/h2\u003e\n\u003cp\u003eBeyond supplying raw enameled copper wire on standard spools, RapidKeen provides processing that saves time and waste on your production line.\u003c\/p\u003e\n\u003ch3\u003eCut-to-Length and Precision Spooling\u003c\/h3\u003e\n\u003cp\u003eWire can be supplied in exact continuous lengths, respooled onto your preferred spool type, or traverse-wound for tangle-free payout on high-speed winding equipment. This reduces setup time and scrap from short ends.\u003c\/p\u003e\n\u003ch3\u003eStranding, Twisting, and Bunching\u003c\/h3\u003e\n\u003cp\u003eMultiple fine magnet wires can be stranded, twisted, or bunched into Litz or multi-strand constructions to reduce high-frequency AC losses or improve flexibility for dynamic coil applications.\u003c\/p\u003e\n\u003ch3\u003eInsulation Stripping and Termination Preparation\u003c\/h3\u003e\n\u003cp\u003eFor non-solderable insulations such as polyester-imide and polyamide-imide, we can supply wire with enamel removed from cut ends using mechanical, thermal, or chemical stripping methods, ready for crimping, welding, or soldering.\u003c\/p\u003e\n\u003ch3\u003eTransposing and Formed Coils\u003c\/h3\u003e\n\u003cp\u003eFor large rectangular magnet wire used in transformers and traction motors, transposing and edge-bending services reduce circulating-current losses and produce coils that drop directly into your assembly.\u003c\/p\u003e\n\u003ch2\u003eWhy Source Magnet Wire from RapidKeen\u003c\/h2\u003e\n\u003cdiv class=\"rk-grid-2\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsistent Enamel Quality\u003c\/h3\u003e\n\u003cp\u003eMulti-pass enameling with in-line spark testing means uniform film thickness, minimal pinholes, and reliable dielectric performance spool after spool — fewer winding stoppages and field failures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eBroad AWG and Insulation Selection\u003c\/h3\u003e\n\u003cp\u003eFrom ultra-fine electronics wire to heavy-gauge motor windings, with every major enamel chemistry and build, you can consolidate enameled copper wire purchases across multiple product lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eApplication-Focused Support\u003c\/h3\u003e\n\u003cp\u003eWe help match thermal class, build, and conductor shape to your voltage, temperature, frequency, and winding method — so you don't over-specify or under-insulate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eFlexible Packaging and Processing\u003c\/h3\u003e\n\u003cp\u003eCustom put-ups, cut lengths, stranding, and stripping services align deliveries with your production schedule and reduce in-house handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire vs. Related Products\u003c\/h2\u003e\n\u003cp\u003eBuyers sometimes compare enameled copper wire with other copper wire products. The distinctions matter for correct selection:\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet Wire \/ Enameled Copper Wire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThin polymer enamel film (micrometers)\u003c\/td\u003e\n\u003ctd\u003eCoil winding: motors, transformers, inductors, solenoids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulated copper hook-up wire\u003c\/td\u003e\n\u003ctd\u003eThick PVC, silicone, or PTFE jacket\u003c\/td\u003e\n\u003ctd\u003ePoint-to-point circuit wiring, harnesses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBare copper wire\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eGrounding, bus bars, craft, jewelry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTinned copper wire\u003c\/td\u003e\n\u003ctd\u003eNone (tin plating for soldering)\u003c\/td\u003e\n\u003ctd\u003eElectrical connections, bus bars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLitz wire\u003c\/td\u003e\n\u003ctd\u003eEnamel film on each individual strand\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency coils, wireless charging, induction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between magnet wire and regular copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eMagnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eIs magnet wire the same as enameled copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eYes. \"Magnet wire\" is the standard North American term, while \"enameled copper wire,\" \"enameled wire,\" and \"winding wire\" describe the same product internationally. All refer to a copper conductor with a cured polymer film insulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eCan enameled copper wire be soldered directly?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003ePolyurethane (UEW) magnet wire is directly solderable — the enamel dissolves in molten solder at around 370–400°C without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped mechanically, thermally, or chemically before soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhich temperature class of magnet wire do I need?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelect a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155°C or 180°C; automotive and compressor windings commonly use 180°C; traction motors and high-reliability industrial drives use 200°C or 220°C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat does AWG mean for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eAWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire: 30 AWG is a fine electronics wire, while 14 AWG is a heavy motor winding wire. The gauge determines current capacity and DC resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is self-bonding magnet wire used for?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelf-bonding magnet wire has an additional adhesive overcoat that fuses turns together when heated, creating a rigid, self-supporting coil without varnish impregnation. It is widely used for speaker voice coils, sensor coils, and intricate coil shapes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhy is copper used instead of aluminum for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eCopper offers higher electrical conductivity, better thermal performance, and easier termination than aluminum. Aluminum magnet wire is sometimes chosen for large, cost-sensitive transformers because it is lighter and cheaper, but it requires a larger cross-section and special joining techniques.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between single, heavy, and triple build insulation?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eBuild refers to enamel thickness. Single build maximizes copper density for low-voltage windings; heavy build is the general-purpose standard; triple build provides extra dielectric withstand for high-voltage or inverter-fed motors exposed to voltage surges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 30px; color: #666; font-size: 14px; border-top: 1px solid #e1f0f2; padding-top: 14px;\"\u003eKeywords: magnet wire, enameled copper wire, enamel coated copper wire, insulated copper wire, winding wire, copper magnet wire, enameled wire, magnetic wire, coil winding wire, AWG magnet wire, solderable magnet wire, high temperature magnet wire, round magnet wire, flat magnet wire, polyurethane magnet wire, polyester enameled wire, polyester-imide magnet wire, polyamide-imide magnet wire, self-bonding magnet wire, motor winding wire, transformer magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Magnet Wire - Enameled Copper Wire\",\n  \"description\": \"Magnet wire (enameled copper wire) with polyurethane, polyester, polyester-imide, and polyamide-imide insulation for motors, transformers, inductors, and coil winding applications.\",\n  \"category\": \"Electrical Wire\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"RapidKeen\"},\n  \"additionalProperty\": [\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Material\", \"value\": \"Copper\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Insulation Type\", \"value\": \"Enamel polymer film\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Thermal Class\", \"value\": \"130°C - 220°C\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Shape\", \"value\": \"Round, Rectangular, Stranded\/Litz\"}\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"What is the difference between magnet wire and regular copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Magnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\"}},\n    {\"@type\": \"Question\", \"name\": \"Is magnet wire the same as enameled copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Magnet wire is the standard North American term, while enameled copper wire, enameled wire, and winding wire describe the same product internationally.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can enameled copper wire be soldered directly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Polyurethane (UEW) magnet wire is directly solderable without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped before soldering.\"}},\n    {\"@type\": \"Question\", \"name\": \"Which temperature class of magnet wire do I need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Select a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155C or 180C; automotive and compressor windings use 180C; traction motors use 200C or 220C.\"}},\n    {\"@type\": \"Question\", \"name\": \"What does AWG mean for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"AWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire and determines current capacity and DC resistance.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is self-bonding magnet wire used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Self-bonding magnet wire has an adhesive overcoat that fuses turns when heated, creating a rigid self-supporting coil without varnish, used for voice coils and sensor coils.\"}},\n    {\"@type\": \"Question\", \"name\": \"Why is copper used instead of aluminum for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Copper offers higher conductivity, better thermal performance, and easier termination. Aluminum is lighter and cheaper but needs a larger cross-section and special joining.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is the difference between single, heavy, and triple build insulation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Build refers to enamel thickness. Single build maximizes copper density, heavy build is the general-purpose standard, and triple build adds dielectric withstand for high-voltage windings.\"}}\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"RapidKeen","offers":[{"title":"44 AWG (0.05 mm) \/ 155°C \/ Full Spool 4500 m (14764 ft)","offer_id":43595785666619,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-41-awg-enameled-copper-wire","title":"Magnet Wire 41 AWG Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 16px;padding-bottom:10px;border-bottom:3px solid #00AAFF;line-height:1.35}\n.rk-mw h3{font-size:20px;color:#005969;margin:28px 0 10px;line-height:1.4}\n.rk-mw h4{font-size:17px;color:#0a7a8c;margin:20px 0 8px}\n.rk-mw h5{font-size:15px;color:#333;margin:16px 0 6px}\n.rk-mw h6{font-size:14px;color:#555;margin:14px 0 6px;text-transform:uppercase;letter-spacing:.5px}\n.rk-mw p{margin:0 0 14px}\n.rk-mw ul,.rk-mw ol{margin:0 0 16px;padding-left:22px}\n.rk-mw li{margin-bottom:6px}\n.rk-mw a{color:#0078a8;text-decoration:none}\n.rk-mw a:hover{text-decoration:underline}\n.rk-mw .rk-lead{font-size:17px;color:#333;background:#f3fafb;border-left:4px solid #00AAFF;padding:16px 20px;border-radius:0 8px 8px 0;margin:0 0 24px}\n.rk-mw .rk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-card{background:#fafdfe;border:1px solid #e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3,.rk-mw .rk-card h4{margin-top:0}\n.rk-mw .rk-table-wrap{overflow-x:auto;margin:16px 0 24px;-webkit-overflow-scrolling:touch}\n.rk-mw table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}\n.rk-mw th{background:#005969;color:#fff;text-align:left;padding:12px 14px;font-weight:600;white-space:nowrap}\n.rk-mw td{padding:11px 14px;border-bottom:1px solid #e6eef0;vertical-align:top}\n.rk-mw tr:nth-child(even) td{background:#f6fbfc}\n.rk-mw .rk-note{background:#fff8e6;border-left:4px solid #f5b301;padding:14px 18px;border-radius:0 8px 8px 0;margin:16px 0;font-size:15px}\n.rk-mw .rk-kw{font-weight:600;color:#005969}\n.rk-mw .rk-process{counter-reset:step;list-style:none;padding-left:0}\n.rk-mw .rk-process li{position:relative;padding:0 0 18px 48px;border-left:2px solid #b3e5fc;margin-left:16px}\n.rk-mw .rk-process li::before{counter-increment:step;content:counter(step);position:absolute;left:-17px;top:0;width:32px;height:32px;background:#00AAFF;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}\n.rk-mw .rk-process li:last-child{border-left:2px solid transparent;padding-bottom:0}\n.rk-mw .rk-process h4{margin:4px 0 6px}\n.rk-mw .rk-faq{border:1px solid #e1f0f2;border-radius:10px;margin-bottom:12px;overflow:hidden}\n.rk-mw .rk-faq h3{margin:0;padding:16px 20px;background:#f3fafb;font-size:17px}\n.rk-mw .rk-faq h3::before{content:\"Q \";color:#00AAFF;font-weight:700}\n.rk-mw .rk-faq .rk-a{padding:0 20px 16px}\n@media(max-width:900px){.rk-mw .rk-grid{grid-template-columns:repeat(2,1fr)}}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid,.rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n  .rk-mw table{font-size:14px}\n  .rk-mw th,.rk-mw td{padding:9px 10px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\u003cp class=\"rk-lead\"\u003e\u003cspan class=\"rk-kw\"\u003eMagnet wire\u003c\/span\u003e — also known as \u003cspan class=\"rk-kw\"\u003eenameled copper wire\u003c\/span\u003e, winding wire, or enamel-coated copper wire — is a copper conductor covered by a thin, tough polymer film that lets thousands of turns sit side by side in a coil without short-circuiting. It is the fundamental conductor inside every motor, transformer, inductor, and electromagnetic device that converts electricity into motion, voltage, or magnetic force.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e is an insulated electrical conductor, almost always copper (and sometimes aluminum), designed to be wound into tight coils. The term \"magnet wire\" is the standard industry name in North America and is defined by the NEMA MW 1000 standard; internationally the same product is called \u003cstrong\u003eenameled wire\u003c\/strong\u003e or \u003cstrong\u003ewinding wire\u003c\/strong\u003e. Despite the word \"enamel,\" the insulation is not glassy porcelain or paint — it is one or more layers of high-performance polymer film applied and cured in precise passes.\u003c\/p\u003e\n\u003cp\u003eThe key difference between \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e and ordinary insulated copper wire is insulation thickness. A typical plastic-jacketed wire adds a millimeter or more of insulation, while magnet wire's enamel film is only a few micrometers thick. That is what allows compact, high-density coil windings where the copper fill factor — the share of cross-section actually occupied by copper — is as high as possible.\u003c\/p\u003e\n\u003ch3\u003eThe Conductor: High-Purity Copper\u003c\/h3\u003e\n\u003cp\u003eThe conductor is electrolytically refined or oxygen-free copper, selected for its superior electrical conductivity, thermal conductivity, and ductility. Copper's low resistance cuts energy loss and heat rise, and after annealing it becomes soft enough to draw down to very fine gauges and wind around sharp bends without work-hardening or breaking.\u003c\/p\u003e\n\u003ch3\u003eThe Insulation: Enamel Polymer Film\u003c\/h3\u003e\n\u003cp\u003eThe enamel coating is applied as a liquid varnish and cured at high temperature, building up a uniform, flexible, dielectric film in multiple passes. Depending on the chemistry, the insulation provides a specific balance of thermal endurance, dielectric strength, solderability, abrasion resistance, and resistance to solvents and refrigerants. Some constructions add a nylon overcoat or a self-bonding top layer for heat-activated adhesion.\u003c\/p\u003e\n\u003ch3\u003eHow Enameled Copper Wire Works in a Coil\u003c\/h3\u003e\n\u003cp\u003eWhen current flows through a coil of magnet wire, every turn contributes to a concentrated electromagnetic field. The enamel film forces current to follow the long helical path of the conductor instead of jumping between touching turns. The thinner and more consistent the insulation, the more copper fits into the same winding window — and the stronger, smaller, and more efficient the resulting motor, transformer, or solenoid.\u003c\/p\u003e\n\u003ch2\u003eTypes of Enamel Insulation\u003c\/h2\u003e\n\u003cp\u003eChoosing the right enamel chemistry is the most important decision when selecting magnet wire. Each insulation type is engineered for a different temperature range, soldering method, and operating environment.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyurethane (UEW \/ PUR)\u003c\/h3\u003e\n\u003cp\u003eSolderable directly at moderate temperatures without stripping the enamel — the film dissolves into the solder joint. Best for small transformers, relays, timers, clock coils, magnetic heads, and fine-wire electronics where easy termination matters.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester (PEW)\u003c\/h3\u003e\n\u003cp\u003eThe most widely used general-purpose enamel, offering a dense, uniform film with good dielectric strength and mechanical toughness at a competitive cost. The workhorse for common motors, appliances, and general winding applications.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 155°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester-Imide (EIW)\u003c\/h3\u003e\n\u003cp\u003eAn upgraded polyester with superior heat shock resistance, solvent resistance, and refrigerant compatibility. Common in hermetic motors, compressors, automotive alternators, and appliances exposed to high operating temperatures.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyamide-Imide (AIW)\u003c\/h3\u003e\n\u003cp\u003eThe premium high-temperature enamel, with exceptional thermal endurance, abrasion resistance, and resistance to overload conditions. Often used as a topcoat over polyester-imide for the highest performance in traction motors, industrial drives, and aerospace windings.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 200°C to 220°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eSelf-Bonding (Bondable)\u003c\/h3\u003e\n\u003cp\u003eMagnet wire with a thermoplastic or thermosetting overcoat that fuses adjacent turns when heated, producing a self-supporting coil without an impregnating varnish. Ideal for voice coils, speaker coils, sensor coils, and complex free-standing windings.\u003c\/p\u003e\n\u003ch4\u003eActivation\u003c\/h4\u003e\n\u003cp\u003eHeat, solvent, or resistance heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eNylon-Overcoated\u003c\/h3\u003e\n\u003cp\u003eA thin polyamide top layer added over the base enamel to improve winding lubricity, abrasion resistance, and chemical resistance. Frequently specified for high-speed automatic winding where the wire must survive tight, fast lay-down.\u003c\/p\u003e\n\u003ch4\u003eTypical base coats\u003c\/h4\u003e\n\u003cp\u003ePolyester or polyester-imide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire Forms and Shapes\u003c\/h2\u003e\n\u003cp\u003eEnameled copper wire is supplied in several conductor geometries to match different winding techniques and slot-fill requirements.\u003c\/p\u003e\n\u003ch3\u003eRound Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eThe standard form for the majority of motor, transformer, relay, and coil applications. Round magnet wire is available across a very wide AWG range — from fine gauges under 50 AWG for precision electronics to heavy gauges above 10 AWG for large motor and transformer windings.\u003c\/p\u003e\n\u003ch3\u003eRectangular and Flat Magnet Wire\u003c\/h3\u003e\n\u003cp\u003eRectangular or square enameled copper wire packs more copper into a given slot than round wire, raising the fill factor and improving thermal performance. It is used in high-power traction motors, large generator coils, welding transformers, and high-current inductors where space efficiency is critical.\u003c\/p\u003e\n\u003ch3\u003eMulti-Strand and Litz Constructions\u003c\/h3\u003e\n\u003cp\u003eFor high-frequency applications, multiple fine enameled wires are twisted or braided together into \u003cstrong\u003eLitz wire\u003c\/strong\u003e to reduce skin-effect and proximity-effect losses. Stranded magnet wire constructions also offer greater flexibility for bend-intensive coil designs.\u003c\/p\u003e\n\u003ch2\u003eTemperature Class and Insulation Build\u003c\/h2\u003e\n\u003ch3\u003eUnderstanding Thermal Class\u003c\/h3\u003e\n\u003cp\u003eEvery enameled copper wire carries a thermal class that indicates the maximum sustained temperature the insulation can endure over a rated service life — commonly 20,000 hours. Choosing a class with headroom above the actual operating temperature extends motor and transformer life.\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Class\u003c\/th\u003e\n\u003cth\u003eMaximum Sustained Temperature\u003c\/th\u003e\n\u003cth\u003eTypical Enamel Chemistry\u003c\/th\u003e\n\u003cth\u003eCommon Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e130°C (Class B)\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003ctd\u003ePolyurethane, Polyester\u003c\/td\u003e\n\u003ctd\u003eSmall transformers, relays, general coils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e155°C (Class F)\u003c\/td\u003e\n\u003ctd\u003e155°C\u003c\/td\u003e\n\u003ctd\u003ePolyester, Polyurethane\u003c\/td\u003e\n\u003ctd\u003eAppliance motors, fans, lighting ballasts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e180°C (Class H)\u003c\/td\u003e\n\u003ctd\u003e180°C\u003c\/td\u003e\n\u003ctd\u003ePolyester-Imide\u003c\/td\u003e\n\u003ctd\u003eCompressors, automotive alternators, power tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200°C (Class N)\u003c\/td\u003e\n\u003ctd\u003e200°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide over EIW\u003c\/td\u003e\n\u003ctd\u003eTraction motors, industrial drives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e220°C (Class R)\u003c\/td\u003e\n\u003ctd\u003e220°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide, aromatic polyimide\u003c\/td\u003e\n\u003ctd\u003eAerospace, high-performance generators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eInsulation Build: Single, Heavy, and Triple\u003c\/h3\u003e\n\u003cp\u003e\"Build\" refers to the total thickness of the enamel film. A heavier build increases dielectric withstand voltage but slightly reduces copper fill factor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle build\u003c\/strong\u003e — thinnest insulation; maximum copper density for low-voltage, well-supported windings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy build\u003c\/strong\u003e — the most common choice; added dielectric margin for typical motor and transformer voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple build\u003c\/strong\u003e — thickest film; specified for high-voltage or surge-prone windings and for inverter-fed motors exposed to fast voltage pulses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow Magnet Wire Is Made\u003c\/h2\u003e\n\u003col class=\"rk-process\"\u003e\n\u003cli\u003e\n\u003ch4\u003eCopper Rod Breakdown and Wire Drawing\u003c\/h4\u003e\n\u003cp\u003eProduction starts with a copper rod that is pulled through a series of diamond or tungsten-carbide dies, reducing its cross-section in stages until it reaches the target AWG diameter. Fine gauges may go through dozens of drawing steps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eContinuous Annealing\u003c\/h4\u003e\n\u003cp\u003eThe drawn wire is passed through a controlled-atmosphere annealing furnace to soften the copper, restore its ductility, and remove work-hardening introduced during drawing. Clean, oxide-free copper is essential for good enamel adhesion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eEnamel Application and Curing\u003c\/h4\u003e\n\u003cp\u003eLiquid enamel varnish is applied by felt or die and cured in a long, temperature-controlled oven. The wire makes multiple passes — often 6 to 12 or more — building the film layer by layer to the required build and ensuring complete coverage without pinholes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eLubrication and Spooling\u003c\/h4\u003e\n\u003cp\u003eA thin surface lubricant may be applied to help the wire feed smoothly through high-speed winding machines. The finished enameled copper wire is then spooled onto plastic or metal reels in continuous lengths.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eIn-Line Quality Control\u003c\/h4\u003e\n\u003cp\u003eEvery spool is checked for continuity, insulation defects (pinholes and bare spots via high-voltage spark testing), dimensional consistency, surface finish, and adhesion. Thermal and dielectric properties are verified on sampled production lots.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eApplications of Enameled Copper Wire\u003c\/h2\u003e\n\u003cp\u003eBecause roughly 90% of all electrical energy passes through a motor, transformer, or coil at some point, magnet wire is one of the most widely used conductors in the modern economy.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eElectric Motors and Generators\u003c\/h3\u003e\n\u003cp\u003eIndustrial motors, EV traction motors, appliance motors, servo motors, fans, pumps, and portable generators all rely on enameled copper wire in their stator and rotor windings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eTransformers and Inductors\u003c\/h3\u003e\n\u003cp\u003ePower transformers, distribution transformers, high-frequency switch-mode transformers, toroidal inductors, chokes, and ballasts use solderable or high-temperature magnet wire depending on frequency and voltage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eAutomotive Electrification\u003c\/h3\u003e\n\u003cp\u003eAlternators, starter motors, electric power steering, ABS actuators, on-board chargers, and EV drivetrain components use high-temperature polyester-imide and polyamide-imide magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRelays, Solenoids, and Actuators\u003c\/h3\u003e\n\u003cp\u003eFine-gauge polyurethane magnet wire is wound into relay coils, solenoid valves, contactors, and linear actuators where direct solderability and compact size matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsumer Electronics and Audio\u003c\/h3\u003e\n\u003cp\u003eSpeaker voice coils, headphone drivers, guitar pickups, watch coils, camera actuators, wireless-charging coils, and magnetic sensor coils use self-bonding and fine-gauge enameled wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRenewable Energy and Industry\u003c\/h3\u003e\n\u003cp\u003eWind turbine generators, solar inverters, welding equipment, induction heaters, UPS systems, and magnet assemblies depend on heavy-build, high-temperature magnet wire for long service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRange \/ Options\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eMagnet Wire \/ Enameled Copper Wire \/ Winding Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor material\u003c\/td\u003e\n\u003ctd\u003eHigh-purity copper (round, rectangular, or stranded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAWG range\u003c\/td\u003e\n\u003ctd\u003eFine gauges (50+ AWG) through heavy gauges (4–10 AWG and larger); metric diameters also available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation chemistry\u003c\/td\u003e\n\u003ctd\u003ePolyurethane (UEW), Polyester (PEW), Polyester-Imide (EIW), Polyamide-Imide (AIW), composite dual coats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal class\u003c\/td\u003e\n\u003ctd\u003e130°C \/ 155°C \/ 180°C \/ 200°C \/ 220°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation build\u003c\/td\u003e\n\u003ctd\u003eSingle, heavy, triple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercoat options\u003c\/td\u003e\n\u003ctd\u003eNylon overcoat, self-bonding overcoat, paraffin or nylon lubricant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor shape\u003c\/td\u003e\n\u003ctd\u003eRound, rectangular \/ flat, square, Litz \/ stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpool packaging\u003c\/td\u003e\n\u003ctd\u003ePlastic spools, metal reels, barrel pack; custom put-ups and continuous lengths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards compliance\u003c\/td\u003e\n\u003ctd\u003eNEMA MW 1000, IEC 60317, JIS C 3202; RoHS and REACH compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolderability\u003c\/td\u003e\n\u003ctd\u003eDirect-solderable on polyurethane types; other types require mechanical or thermal stripping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical colors\u003c\/td\u003e\n\u003ctd\u003eNatural amber\/clear; red, green, blue, and other colors available for identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"rk-note\"\u003eAWG (American Wire Gauge) is the standard sizing system used in North America. If your design uses metric diameters, we can cross-reference and supply to the equivalent AWG size.\u003c\/p\u003e\n\u003ch2\u003eValue-Added Processing Services\u003c\/h2\u003e\n\u003cp\u003eBeyond supplying raw enameled copper wire on standard spools, RapidKeen provides processing that saves time and waste on your production line.\u003c\/p\u003e\n\u003ch3\u003eCut-to-Length and Precision Spooling\u003c\/h3\u003e\n\u003cp\u003eWire can be supplied in exact continuous lengths, respooled onto your preferred spool type, or traverse-wound for tangle-free payout on high-speed winding equipment. This reduces setup time and scrap from short ends.\u003c\/p\u003e\n\u003ch3\u003eStranding, Twisting, and Bunching\u003c\/h3\u003e\n\u003cp\u003eMultiple fine magnet wires can be stranded, twisted, or bunched into Litz or multi-strand constructions to reduce high-frequency AC losses or improve flexibility for dynamic coil applications.\u003c\/p\u003e\n\u003ch3\u003eInsulation Stripping and Termination Preparation\u003c\/h3\u003e\n\u003cp\u003eFor non-solderable insulations such as polyester-imide and polyamide-imide, we can supply wire with enamel removed from cut ends using mechanical, thermal, or chemical stripping methods, ready for crimping, welding, or soldering.\u003c\/p\u003e\n\u003ch3\u003eTransposing and Formed Coils\u003c\/h3\u003e\n\u003cp\u003eFor large rectangular magnet wire used in transformers and traction motors, transposing and edge-bending services reduce circulating-current losses and produce coils that drop directly into your assembly.\u003c\/p\u003e\n\u003ch2\u003eWhy Source Magnet Wire from RapidKeen\u003c\/h2\u003e\n\u003cdiv class=\"rk-grid-2\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsistent Enamel Quality\u003c\/h3\u003e\n\u003cp\u003eMulti-pass enameling with in-line spark testing means uniform film thickness, minimal pinholes, and reliable dielectric performance spool after spool — fewer winding stoppages and field failures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eBroad AWG and Insulation Selection\u003c\/h3\u003e\n\u003cp\u003eFrom ultra-fine electronics wire to heavy-gauge motor windings, with every major enamel chemistry and build, you can consolidate enameled copper wire purchases across multiple product lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eApplication-Focused Support\u003c\/h3\u003e\n\u003cp\u003eWe help match thermal class, build, and conductor shape to your voltage, temperature, frequency, and winding method — so you don't over-specify or under-insulate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eFlexible Packaging and Processing\u003c\/h3\u003e\n\u003cp\u003eCustom put-ups, cut lengths, stranding, and stripping services align deliveries with your production schedule and reduce in-house handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire vs. Related Products\u003c\/h2\u003e\n\u003cp\u003eBuyers sometimes compare enameled copper wire with other copper wire products. The distinctions matter for correct selection:\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet Wire \/ Enameled Copper Wire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThin polymer enamel film (micrometers)\u003c\/td\u003e\n\u003ctd\u003eCoil winding: motors, transformers, inductors, solenoids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulated copper hook-up wire\u003c\/td\u003e\n\u003ctd\u003eThick PVC, silicone, or PTFE jacket\u003c\/td\u003e\n\u003ctd\u003ePoint-to-point circuit wiring, harnesses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBare copper wire\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eGrounding, bus bars, craft, jewelry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTinned copper wire\u003c\/td\u003e\n\u003ctd\u003eNone (tin plating for soldering)\u003c\/td\u003e\n\u003ctd\u003eElectrical connections, bus bars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLitz wire\u003c\/td\u003e\n\u003ctd\u003eEnamel film on each individual strand\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency coils, wireless charging, induction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between magnet wire and regular copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eMagnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eIs magnet wire the same as enameled copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eYes. \"Magnet wire\" is the standard North American term, while \"enameled copper wire,\" \"enameled wire,\" and \"winding wire\" describe the same product internationally. All refer to a copper conductor with a cured polymer film insulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eCan enameled copper wire be soldered directly?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003ePolyurethane (UEW) magnet wire is directly solderable — the enamel dissolves in molten solder at around 370–400°C without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped mechanically, thermally, or chemically before soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhich temperature class of magnet wire do I need?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelect a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155°C or 180°C; automotive and compressor windings commonly use 180°C; traction motors and high-reliability industrial drives use 200°C or 220°C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat does AWG mean for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eAWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire: 30 AWG is a fine electronics wire, while 14 AWG is a heavy motor winding wire. The gauge determines current capacity and DC resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is self-bonding magnet wire used for?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelf-bonding magnet wire has an additional adhesive overcoat that fuses turns together when heated, creating a rigid, self-supporting coil without varnish impregnation. It is widely used for speaker voice coils, sensor coils, and intricate coil shapes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhy is copper used instead of aluminum for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eCopper offers higher electrical conductivity, better thermal performance, and easier termination than aluminum. Aluminum magnet wire is sometimes chosen for large, cost-sensitive transformers because it is lighter and cheaper, but it requires a larger cross-section and special joining techniques.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between single, heavy, and triple build insulation?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eBuild refers to enamel thickness. Single build maximizes copper density for low-voltage windings; heavy build is the general-purpose standard; triple build provides extra dielectric withstand for high-voltage or inverter-fed motors exposed to voltage surges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 30px; color: #666; font-size: 14px; border-top: 1px solid #e1f0f2; padding-top: 14px;\"\u003eKeywords: magnet wire, enameled copper wire, enamel coated copper wire, insulated copper wire, winding wire, copper magnet wire, enameled wire, magnetic wire, coil winding wire, AWG magnet wire, solderable magnet wire, high temperature magnet wire, round magnet wire, flat magnet wire, polyurethane magnet wire, polyester enameled wire, polyester-imide magnet wire, polyamide-imide magnet wire, self-bonding magnet wire, motor winding wire, transformer magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Magnet Wire - Enameled Copper Wire\",\n  \"description\": \"Magnet wire (enameled copper wire) with polyurethane, polyester, polyester-imide, and polyamide-imide insulation for motors, transformers, inductors, and coil winding applications.\",\n  \"category\": \"Electrical Wire\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"RapidKeen\"},\n  \"additionalProperty\": [\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Material\", \"value\": \"Copper\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Insulation Type\", \"value\": \"Enamel polymer film\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Thermal Class\", \"value\": \"130°C - 220°C\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Shape\", \"value\": \"Round, Rectangular, Stranded\/Litz\"}\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"What is the difference between magnet wire and regular copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Magnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\"}},\n    {\"@type\": \"Question\", \"name\": \"Is magnet wire the same as enameled copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Magnet wire is the standard North American term, while enameled copper wire, enameled wire, and winding wire describe the same product internationally.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can enameled copper wire be soldered directly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Polyurethane (UEW) magnet wire is directly solderable without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped before soldering.\"}},\n    {\"@type\": \"Question\", \"name\": \"Which temperature class of magnet wire do I need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Select a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155C or 180C; automotive and compressor windings use 180C; traction motors use 200C or 220C.\"}},\n    {\"@type\": \"Question\", \"name\": \"What does AWG mean for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"AWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire and determines current capacity and DC resistance.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is self-bonding magnet wire used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Self-bonding magnet wire has an adhesive overcoat that fuses turns when heated, creating a rigid self-supporting coil without varnish, used for voice coils and sensor coils.\"}},\n    {\"@type\": \"Question\", \"name\": \"Why is copper used instead of aluminum for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Copper offers higher conductivity, better thermal performance, and easier termination. Aluminum is lighter and cheaper but needs a larger cross-section and special joining.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is the difference between single, heavy, and triple build insulation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Build refers to enamel thickness. Single build maximizes copper density, heavy build is the general-purpose standard, and triple build adds dielectric withstand for high-voltage windings.\"}}\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"RapidKeen","offers":[{"title":"41 AWG (0.07 mm) \/ 155℃ \/ Full Spool 3300 m (10827 ft)","offer_id":43597106413627,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-40-awg-enameled-copper-wire","title":"Magnet Wire 40 AWG Enameled Copper Wire for Coil Winding","description":"Magnet wire — also known as enameled copper wire, winding wire, or enamel-coated copper wire — is a copper conductor covered by a thin, tough polymer film that lets thousands of turns sit side by side in a coil without short-circuiting. It is the fundamental conductor inside every motor, transformer, inductor, and electromagnetic device that converts electricity into motion, voltage, or magnetic force.\n\nWhat Is Magnet Wire?\n\nMagnet wire is an insulated electrical conductor, almost always copper (and sometimes aluminum), designed to be wound into tight coils. The term \"magnet wire\" is the standard industry name in North America and is defined by the NEMA MW 1000 standard; internationally the same product is called enameled wire or winding wire. Despite the word \"enamel,\" the insulation is not glassy porcelain or paint — it is one or more layers of high-performance polymer film applied and cured in precise passes.\n\nThe key difference between enameled copper wire and ordinary insulated copper wire is insulation thickness. A typical plastic-jacketed wire adds a millimeter or more of insulation, while magnet wire's enamel film is only a few micrometers thick. That is what allows compact, high-density coil windings where the copper fill factor — the share of cross-section actually occupied by copper — is as high as possible.\n\nThe Conductor: High-Purity Copper\n\nThe conductor is electrolytically refined or oxygen-free copper, selected for its superior electrical conductivity, thermal conductivity, and ductility. Copper's low resistance cuts energy loss and heat rise, and after annealing it becomes soft enough to draw down to very fine gauges and wind around sharp bends without work-hardening or breaking.\n\nThe Insulation: Enamel Polymer Film\n\nThe enamel coating is applied as a liquid varnish and cured at high temperature, building up a uniform, flexible, dielectric film in multiple passes. Depending on the chemistry, the insulation provides a specific balance of thermal endurance, dielectric strength, solderability, abrasion resistance, and resistance to solvents and refrigerants. Some constructions add a nylon overcoat or a self-bonding top layer for heat-activated adhesion.\n\nHow Enameled Copper Wire Works in a Coil\n\nWhen current flows through a coil of magnet wire, every turn contributes to a concentrated electromagnetic field. The enamel film forces current to follow the long helical path of the conductor instead of jumping between touching turns. The thinner and more consistent the insulation, the more copper fits into the same winding window — and the stronger, smaller, and more efficient the resulting motor, transformer, or solenoid.\n\nTypes of Enamel Insulation\n\nChoosing the right enamel chemistry is the most important decision when selecting magnet wire. Each insulation type is engineered for a different temperature range, soldering method, and operating environment.\n\nPolyurethane (UEW \/ PUR)\n\nSolderable directly at moderate temperatures without stripping the enamel — the film dissolves into the solder joint. Best for small transformers, relays, timers, clock coils, magnetic heads, and fine-wire electronics where easy termination matters.\n\nTemperature range\n\nTypically 130°C to 180°C thermal class.\n\nPolyester (PEW)\n\nThe most widely used general-purpose enamel, offering a dense, uniform film with good dielectric strength and mechanical toughness at a competitive cost. The workhorse for common motors, appliances, and general winding applications.\n\nTemperature range\n\nTypically 130°C to 155°C thermal class.\n\nPolyester-Imide (EIW)\n\nAn upgraded polyester with superior heat shock resistance, solvent resistance, and refrigerant compatibility. Common in hermetic motors, compressors, automotive alternators, and appliances exposed to high operating temperatures.\n\nTemperature range\n\nTypically 180°C thermal class.\n\nPolyamide-Imide (AIW)\n\nThe premium high-temperature enamel, with exceptional thermal endurance, abrasion resistance, and resistance to overload conditions. Often used as a topcoat over polyester-imide for the highest performance in traction motors, industrial drives, and aerospace windings.\n\nTemperature range\n\nTypically 200°C to 220°C thermal class.\n\nSelf-Bonding (Bondable)\n\nMagnet wire with a thermoplastic or thermosetting overcoat that fuses adjacent turns when heated, producing a self-supporting coil without an impregnating varnish. Ideal for voice coils, speaker coils, sensor coils, and complex free-standing windings.\n\nActivation\n\nHeat, solvent, or resistance heating.\n\nNylon-Overcoated\n\nA thin polyamide top layer added over the base enamel to improve winding lubricity, abrasion resistance, and chemical resistance. Frequently specified for high-speed automatic winding where the wire must survive tight, fast lay-down.\n\nTypical base coats\n\nPolyester or polyester-imide.\n\nMagnet Wire Forms and Shapes\n\nEnameled copper wire is supplied in several conductor geometries to match different winding techniques and slot-fill requirements.\n\nRound Enameled Copper Wire\n\nThe standard form for the majority of motor, transformer, relay, and coil applications. Round magnet wire is available across a very wide AWG range — from fine gauges under 50 AWG for precision electronics to heavy gauges above 10 AWG for large motor and transformer windings.\n\nRectangular and Flat Magnet Wire\n\nRectangular or square enameled copper wire packs more copper into a given slot than round wire, raising the fill factor and improving thermal performance. It is used in high-power traction motors, large generator coils, welding transformers, and high-current inductors where space efficiency is critical.\n\nMulti-Strand and Litz Constructions\n\nFor high-frequency applications, multiple fine enameled wires are twisted or braided together into Litz wire to reduce skin-effect and proximity-effect losses. Stranded magnet wire constructions also offer greater flexibility for bend-intensive coil designs.\n\nTemperature Class and Insulation Build\nUnderstanding Thermal Class\n\nEvery enameled copper wire carries a thermal class that indicates the maximum sustained temperature the insulation can endure over a rated service life — commonly 20,000 hours. Choosing a class with headroom above the actual operating temperature extends motor and transformer life.\n\nThermal Class\tMaximum Sustained Temperature\tTypical Enamel Chemistry\tCommon Applications\n130°C (Class B)\t130°C\tPolyurethane, Polyester\tSmall transformers, relays, general coils\n155°C (Class F)\t155°C\tPolyester, Polyurethane\tAppliance motors, fans, lighting ballasts\n180°C (Class H)\t180°C\tPolyester-Imide\tCompressors, automotive alternators, power tools\n200°C (Class N)\t200°C\tPolyamide-Imide over EIW\tTraction motors, industrial drives\n220°C (Class R)\t220°C\tPolyamide-Imide, aromatic polyimide\tAerospace, high-performance generators\nInsulation Build: Single, Heavy, and Triple\n\n\"Build\" refers to the total thickness of the enamel film. A heavier build increases dielectric withstand voltage but slightly reduces copper fill factor.\n\nSingle build — thinnest insulation; maximum copper density for low-voltage, well-supported windings.\nHeavy build — the most common choice; added dielectric margin for typical motor and transformer voltages.\nTriple build — thickest film; specified for high-voltage or surge-prone windings and for inverter-fed motors exposed to fast voltage pulses.\nHow Magnet Wire Is Made\nCopper Rod Breakdown and Wire Drawing\n\nProduction starts with a copper rod that is pulled through a series of diamond or tungsten-carbide dies, reducing its cross-section in stages until it reaches the target AWG diameter. Fine gauges may go through dozens of drawing steps.\n\nContinuous Annealing\n\nThe drawn wire is passed through a controlled-atmosphere annealing furnace to soften the copper, restore its ductility, and remove work-hardening introduced during drawing. Clean, oxide-free copper is essential for good enamel adhesion.\n\nEnamel Application and Curing\n\nLiquid enamel varnish is applied by felt or die and cured in a long, temperature-controlled oven. The wire makes multiple passes — often 6 to 12 or more — building the film layer by layer to the required build and ensuring complete coverage without pinholes.\n\nLubrication and Spooling\n\nA thin surface lubricant may be applied to help the wire feed smoothly through high-speed winding machines. The finished enameled copper wire is then spooled onto plastic or metal reels in continuous lengths.\n\nIn-Line Quality Control\n\nEvery spool is checked for continuity, insulation defects (pinholes and bare spots via high-voltage spark testing), dimensional consistency, surface finish, and adhesion. Thermal and dielectric properties are verified on sampled production lots.\n\nApplications of Enameled Copper Wire\n\nBecause roughly 90% of all electrical energy passes through a motor, transformer, or coil at some point, magnet wire is one of the most widely used conductors in the modern economy.\n\nElectric Motors and Generators\n\nIndustrial motors, EV traction motors, appliance motors, servo motors, fans, pumps, and portable generators all rely on enameled copper wire in their stator and rotor windings.\n\nTransformers and Inductors\n\nPower transformers, distribution transformers, high-frequency switch-mode transformers, toroidal inductors, chokes, and ballasts use solderable or high-temperature magnet wire depending on frequency and voltage.\n\nAutomotive Electrification\n\nAlternators, starter motors, electric power steering, ABS actuators, on-board chargers, and EV drivetrain components use high-temperature polyester-imide and polyamide-imide magnet wire.\n\nRelays, Solenoids, and Actuators\n\nFine-gauge polyurethane magnet wire is wound into relay coils, solenoid valves, contactors, and linear actuators where direct solderability and compact size matter.\n\nConsumer Electronics and Audio\n\nSpeaker voice coils, headphone drivers, guitar pickups, watch coils, camera actuators, wireless-charging coils, and magnetic sensor coils use self-bonding and fine-gauge enameled wire.\n\nRenewable Energy and Industry\n\nWind turbine generators, solar inverters, welding equipment, induction heaters, UPS systems, and magnet assemblies depend on heavy-build, high-temperature magnet wire for long service life.\n\nTechnical Specifications\nParameter\tRange \/ Options\nProduct name\tMagnet Wire \/ Enameled Copper Wire \/ Winding Wire\nConductor material\tHigh-purity copper (round, rectangular, or stranded)\nAWG range\tFine gauges (50+ AWG) through heavy gauges (4–10 AWG and larger); metric diameters also available\nInsulation chemistry\tPolyurethane (UEW), Polyester (PEW), Polyester-Imide (EIW), Polyamide-Imide (AIW), composite dual coats\nThermal class\t130°C \/ 155°C \/ 180°C \/ 200°C \/ 220°C\nInsulation build\tSingle, heavy, triple\nOvercoat options\tNylon overcoat, self-bonding overcoat, paraffin or nylon lubricant\nConductor shape\tRound, rectangular \/ flat, square, Litz \/ stranded\nSpool packaging\tPlastic spools, metal reels, barrel pack; custom put-ups and continuous lengths\nStandards compliance\tNEMA MW 1000, IEC 60317, JIS C 3202; RoHS and REACH compliant\nSolderability\tDirect-solderable on polyurethane types; other types require mechanical or thermal stripping\nTypical colors\tNatural amber\/clear; red, green, blue, and other colors available for identification\n\nAWG (American Wire Gauge) is the standard sizing system used in North America. If your design uses metric diameters, we can cross-reference and supply to the equivalent AWG size.\n\nValue-Added Processing Services\n\nBeyond supplying raw enameled copper wire on standard spools, RapidKeen provides processing that saves time and waste on your production line.\n\nCut-to-Length and Precision Spooling\n\nWire can be supplied in exact continuous lengths, respooled onto your preferred spool type, or traverse-wound for tangle-free payout on high-speed winding equipment. This reduces setup time and scrap from short ends.\n\nStranding, Twisting, and Bunching\n\nMultiple fine magnet wires can be stranded, twisted, or bunched into Litz or multi-strand constructions to reduce high-frequency AC losses or improve flexibility for dynamic coil applications.\n\nInsulation Stripping and Termination Preparation\n\nFor non-solderable insulations such as polyester-imide and polyamide-imide, we can supply wire with enamel removed from cut ends using mechanical, thermal, or chemical stripping methods, ready for crimping, welding, or soldering.\n\nTransposing and Formed Coils\n\nFor large rectangular magnet wire used in transformers and traction motors, transposing and edge-bending services reduce circulating-current losses and produce coils that drop directly into your assembly.\n\nWhy Source Magnet Wire from RapidKeen\nConsistent Enamel Quality\n\nMulti-pass enameling with in-line spark testing means uniform film thickness, minimal pinholes, and reliable dielectric performance spool after spool — fewer winding stoppages and field failures.\n\nBroad AWG and Insulation Selection\n\nFrom ultra-fine electronics wire to heavy-gauge motor windings, with every major enamel chemistry and build, you can consolidate enameled copper wire purchases across multiple product lines.\n\nApplication-Focused Support\n\nWe help match thermal class, build, and conductor shape to your voltage, temperature, frequency, and winding method — so you don't over-specify or under-insulate.\n\nFlexible Packaging and Processing\n\nCustom put-ups, cut lengths, stranding, and stripping services align deliveries with your production schedule and reduce in-house handling.\n\nMagnet Wire vs. Related Products\n\nBuyers sometimes compare enameled copper wire with other copper wire products. The distinctions matter for correct selection:\n\nProduct\tInsulation\tTypical Use\nMagnet Wire \/ Enameled Copper Wire\tThin polymer enamel film (micrometers)\tCoil winding: motors, transformers, inductors, solenoids\nInsulated copper hook-up wire\tThick PVC, silicone, or PTFE jacket\tPoint-to-point circuit wiring, harnesses\nBare copper wire\tNone\tGrounding, bus bars, craft, jewelry\nTinned copper wire\tNone (tin plating for soldering)\tElectrical connections, bus bars\nLitz wire\tEnamel film on each individual strand\tHigh-frequency coils, wireless charging, induction\nFrequently Asked Questions\nWhat is the difference between magnet wire and regular copper wire?\n\nMagnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\n\nIs magnet wire the same as enameled copper wire?\n\nYes. \"Magnet wire\" is the standard North American term, while \"enameled copper wire,\" \"enameled wire,\" and \"winding wire\" describe the same product internationally. All refer to a copper conductor with a cured polymer film insulation.\n\nCan enameled copper wire be soldered directly?\n\nPolyurethane (UEW) magnet wire is directly solderable — the enamel dissolves in molten solder at around 370–400°C without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped mechanically, thermally, or chemically before soldering.\n\nWhich temperature class of magnet wire do I need?\n\nSelect a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155°C or 180°C; automotive and compressor windings commonly use 180°C; traction motors and high-reliability industrial drives use 200°C or 220°C.\n\nWhat does AWG mean for magnet wire?\n\nAWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire: 30 AWG is a fine electronics wire, while 14 AWG is a heavy motor winding wire. The gauge determines current capacity and DC resistance.\n\nWhat is self-bonding magnet wire used for?\n\nSelf-bonding magnet wire has an additional adhesive overcoat that fuses turns together when heated, creating a rigid, self-supporting coil without varnish impregnation. It is widely used for speaker voice coils, sensor coils, and intricate coil shapes.\n\nWhy is copper used instead of aluminum for magnet wire?\n\nCopper offers higher electrical conductivity, better thermal performance, and easier termination than aluminum. Aluminum magnet wire is sometimes chosen for large, cost-sensitive transformers because it is lighter and cheaper, but it requires a larger cross-section and special joining techniques.\n\nWhat is the difference between single, heavy, and triple build insulation?\n\nBuild refers to enamel thickness. Single build maximizes copper density for low-voltage windings; heavy build is the general-purpose standard; triple build provides extra dielectric withstand for high-voltage or inverter-fed motors exposed to voltage surges.\n\nKeywords: magnet wire, enameled copper wire, enamel coated copper wire, insulated copper wire, winding wire, copper magnet wire, enameled wire, magnetic wire, coil winding wire, AWG magnet wire, solderable magnet wire, high temperature magnet wire, round magnet wire, flat magnet wire, polyurethane magnet wire, polyester enameled wire, polyester-imide magnet wire, polyamide-imide magnet wire, self-bonding magnet wire, motor winding wire, transformer magnet wire.","brand":"RapidKeen","offers":[{"title":"40 AWG (0.08 mm) \/ 155°C \/ Full Spool 2600 m (8530 ft)","offer_id":43597122994235,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-38-awg-enameled-copper-wire","title":"Magnet Wire 38 AWG Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 16px;padding-bottom:10px;border-bottom:3px solid #00AAFF;line-height:1.35}\n.rk-mw h3{font-size:20px;color:#005969;margin:28px 0 10px;line-height:1.4}\n.rk-mw h4{font-size:17px;color:#0a7a8c;margin:20px 0 8px}\n.rk-mw h5{font-size:15px;color:#333;margin:16px 0 6px}\n.rk-mw h6{font-size:14px;color:#555;margin:14px 0 6px;text-transform:uppercase;letter-spacing:.5px}\n.rk-mw p{margin:0 0 14px}\n.rk-mw ul,.rk-mw ol{margin:0 0 16px;padding-left:22px}\n.rk-mw li{margin-bottom:6px}\n.rk-mw a{color:#0078a8;text-decoration:none}\n.rk-mw a:hover{text-decoration:underline}\n.rk-mw .rk-lead{font-size:17px;color:#333;background:#f3fafb;border-left:4px solid #00AAFF;padding:16px 20px;border-radius:0 8px 8px 0;margin:0 0 24px}\n.rk-mw .rk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-card{background:#fafdfe;border:1px solid #e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3,.rk-mw .rk-card h4{margin-top:0}\n.rk-mw .rk-table-wrap{overflow-x:auto;margin:16px 0 24px;-webkit-overflow-scrolling:touch}\n.rk-mw table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}\n.rk-mw th{background:#005969;color:#fff;text-align:left;padding:12px 14px;font-weight:600;white-space:nowrap}\n.rk-mw td{padding:11px 14px;border-bottom:1px solid #e6eef0;vertical-align:top}\n.rk-mw tr:nth-child(even) td{background:#f6fbfc}\n.rk-mw .rk-note{background:#fff8e6;border-left:4px solid #f5b301;padding:14px 18px;border-radius:0 8px 8px 0;margin:16px 0;font-size:15px}\n.rk-mw .rk-kw{font-weight:600;color:#005969}\n.rk-mw .rk-process{counter-reset:step;list-style:none;padding-left:0}\n.rk-mw .rk-process li{position:relative;padding:0 0 18px 48px;border-left:2px solid #b3e5fc;margin-left:16px}\n.rk-mw .rk-process li::before{counter-increment:step;content:counter(step);position:absolute;left:-17px;top:0;width:32px;height:32px;background:#00AAFF;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}\n.rk-mw .rk-process li:last-child{border-left:2px solid transparent;padding-bottom:0}\n.rk-mw .rk-process h4{margin:4px 0 6px}\n.rk-mw .rk-faq{border:1px solid #e1f0f2;border-radius:10px;margin-bottom:12px;overflow:hidden}\n.rk-mw .rk-faq h3{margin:0;padding:16px 20px;background:#f3fafb;font-size:17px}\n.rk-mw .rk-faq h3::before{content:\"Q \";color:#00AAFF;font-weight:700}\n.rk-mw .rk-faq .rk-a{padding:0 20px 16px}\n@media(max-width:900px){.rk-mw .rk-grid{grid-template-columns:repeat(2,1fr)}}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid,.rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n  .rk-mw table{font-size:14px}\n  .rk-mw th,.rk-mw td{padding:9px 10px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\u003cp class=\"rk-lead\"\u003e\u003cspan class=\"rk-kw\"\u003eMagnet wire\u003c\/span\u003e — also known as \u003cspan class=\"rk-kw\"\u003eenameled copper wire\u003c\/span\u003e, winding wire, or enamel-coated copper wire — is a copper conductor covered by a thin, tough polymer film that lets thousands of turns sit side by side in a coil without short-circuiting. It is the fundamental conductor inside every motor, transformer, inductor, and electromagnetic device that converts electricity into motion, voltage, or magnetic force.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e is an insulated electrical conductor, almost always copper (and sometimes aluminum), designed to be wound into tight coils. The term \"magnet wire\" is the standard industry name in North America and is defined by the NEMA MW 1000 standard; internationally the same product is called \u003cstrong\u003eenameled wire\u003c\/strong\u003e or \u003cstrong\u003ewinding wire\u003c\/strong\u003e. Despite the word \"enamel,\" the insulation is not glassy porcelain or paint — it is one or more layers of high-performance polymer film applied and cured in precise passes.\u003c\/p\u003e\n\u003cp\u003eThe key difference between \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e and ordinary insulated copper wire is insulation thickness. A typical plastic-jacketed wire adds a millimeter or more of insulation, while magnet wire's enamel film is only a few micrometers thick. That is what allows compact, high-density coil windings where the copper fill factor — the share of cross-section actually occupied by copper — is as high as possible.\u003c\/p\u003e\n\u003ch3\u003eThe Conductor: High-Purity Copper\u003c\/h3\u003e\n\u003cp\u003eThe conductor is electrolytically refined or oxygen-free copper, selected for its superior electrical conductivity, thermal conductivity, and ductility. Copper's low resistance cuts energy loss and heat rise, and after annealing it becomes soft enough to draw down to very fine gauges and wind around sharp bends without work-hardening or breaking.\u003c\/p\u003e\n\u003ch3\u003eThe Insulation: Enamel Polymer Film\u003c\/h3\u003e\n\u003cp\u003eThe enamel coating is applied as a liquid varnish and cured at high temperature, building up a uniform, flexible, dielectric film in multiple passes. Depending on the chemistry, the insulation provides a specific balance of thermal endurance, dielectric strength, solderability, abrasion resistance, and resistance to solvents and refrigerants. Some constructions add a nylon overcoat or a self-bonding top layer for heat-activated adhesion.\u003c\/p\u003e\n\u003ch3\u003eHow Enameled Copper Wire Works in a Coil\u003c\/h3\u003e\n\u003cp\u003eWhen current flows through a coil of magnet wire, every turn contributes to a concentrated electromagnetic field. The enamel film forces current to follow the long helical path of the conductor instead of jumping between touching turns. The thinner and more consistent the insulation, the more copper fits into the same winding window — and the stronger, smaller, and more efficient the resulting motor, transformer, or solenoid.\u003c\/p\u003e\n\u003ch2\u003eTypes of Enamel Insulation\u003c\/h2\u003e\n\u003cp\u003eChoosing the right enamel chemistry is the most important decision when selecting magnet wire. Each insulation type is engineered for a different temperature range, soldering method, and operating environment.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyurethane (UEW \/ PUR)\u003c\/h3\u003e\n\u003cp\u003eSolderable directly at moderate temperatures without stripping the enamel — the film dissolves into the solder joint. Best for small transformers, relays, timers, clock coils, magnetic heads, and fine-wire electronics where easy termination matters.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester (PEW)\u003c\/h3\u003e\n\u003cp\u003eThe most widely used general-purpose enamel, offering a dense, uniform film with good dielectric strength and mechanical toughness at a competitive cost. The workhorse for common motors, appliances, and general winding applications.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 155°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester-Imide (EIW)\u003c\/h3\u003e\n\u003cp\u003eAn upgraded polyester with superior heat shock resistance, solvent resistance, and refrigerant compatibility. Common in hermetic motors, compressors, automotive alternators, and appliances exposed to high operating temperatures.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyamide-Imide (AIW)\u003c\/h3\u003e\n\u003cp\u003eThe premium high-temperature enamel, with exceptional thermal endurance, abrasion resistance, and resistance to overload conditions. Often used as a topcoat over polyester-imide for the highest performance in traction motors, industrial drives, and aerospace windings.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 200°C to 220°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eSelf-Bonding (Bondable)\u003c\/h3\u003e\n\u003cp\u003eMagnet wire with a thermoplastic or thermosetting overcoat that fuses adjacent turns when heated, producing a self-supporting coil without an impregnating varnish. Ideal for voice coils, speaker coils, sensor coils, and complex free-standing windings.\u003c\/p\u003e\n\u003ch4\u003eActivation\u003c\/h4\u003e\n\u003cp\u003eHeat, solvent, or resistance heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eNylon-Overcoated\u003c\/h3\u003e\n\u003cp\u003eA thin polyamide top layer added over the base enamel to improve winding lubricity, abrasion resistance, and chemical resistance. Frequently specified for high-speed automatic winding where the wire must survive tight, fast lay-down.\u003c\/p\u003e\n\u003ch4\u003eTypical base coats\u003c\/h4\u003e\n\u003cp\u003ePolyester or polyester-imide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire Forms and Shapes\u003c\/h2\u003e\n\u003cp\u003eEnameled copper wire is supplied in several conductor geometries to match different winding techniques and slot-fill requirements.\u003c\/p\u003e\n\u003ch3\u003eRound Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eThe standard form for the majority of motor, transformer, relay, and coil applications. Round magnet wire is available across a very wide AWG range — from fine gauges under 50 AWG for precision electronics to heavy gauges above 10 AWG for large motor and transformer windings.\u003c\/p\u003e\n\u003ch3\u003eRectangular and Flat Magnet Wire\u003c\/h3\u003e\n\u003cp\u003eRectangular or square enameled copper wire packs more copper into a given slot than round wire, raising the fill factor and improving thermal performance. It is used in high-power traction motors, large generator coils, welding transformers, and high-current inductors where space efficiency is critical.\u003c\/p\u003e\n\u003ch3\u003eMulti-Strand and Litz Constructions\u003c\/h3\u003e\n\u003cp\u003eFor high-frequency applications, multiple fine enameled wires are twisted or braided together into \u003cstrong\u003eLitz wire\u003c\/strong\u003e to reduce skin-effect and proximity-effect losses. Stranded magnet wire constructions also offer greater flexibility for bend-intensive coil designs.\u003c\/p\u003e\n\u003ch2\u003eTemperature Class and Insulation Build\u003c\/h2\u003e\n\u003ch3\u003eUnderstanding Thermal Class\u003c\/h3\u003e\n\u003cp\u003eEvery enameled copper wire carries a thermal class that indicates the maximum sustained temperature the insulation can endure over a rated service life — commonly 20,000 hours. Choosing a class with headroom above the actual operating temperature extends motor and transformer life.\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Class\u003c\/th\u003e\n\u003cth\u003eMaximum Sustained Temperature\u003c\/th\u003e\n\u003cth\u003eTypical Enamel Chemistry\u003c\/th\u003e\n\u003cth\u003eCommon Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e130°C (Class B)\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003ctd\u003ePolyurethane, Polyester\u003c\/td\u003e\n\u003ctd\u003eSmall transformers, relays, general coils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e155°C (Class F)\u003c\/td\u003e\n\u003ctd\u003e155°C\u003c\/td\u003e\n\u003ctd\u003ePolyester, Polyurethane\u003c\/td\u003e\n\u003ctd\u003eAppliance motors, fans, lighting ballasts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e180°C (Class H)\u003c\/td\u003e\n\u003ctd\u003e180°C\u003c\/td\u003e\n\u003ctd\u003ePolyester-Imide\u003c\/td\u003e\n\u003ctd\u003eCompressors, automotive alternators, power tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200°C (Class N)\u003c\/td\u003e\n\u003ctd\u003e200°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide over EIW\u003c\/td\u003e\n\u003ctd\u003eTraction motors, industrial drives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e220°C (Class R)\u003c\/td\u003e\n\u003ctd\u003e220°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide, aromatic polyimide\u003c\/td\u003e\n\u003ctd\u003eAerospace, high-performance generators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eInsulation Build: Single, Heavy, and Triple\u003c\/h3\u003e\n\u003cp\u003e\"Build\" refers to the total thickness of the enamel film. A heavier build increases dielectric withstand voltage but slightly reduces copper fill factor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle build\u003c\/strong\u003e — thinnest insulation; maximum copper density for low-voltage, well-supported windings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy build\u003c\/strong\u003e — the most common choice; added dielectric margin for typical motor and transformer voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple build\u003c\/strong\u003e — thickest film; specified for high-voltage or surge-prone windings and for inverter-fed motors exposed to fast voltage pulses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow Magnet Wire Is Made\u003c\/h2\u003e\n\u003col class=\"rk-process\"\u003e\n\u003cli\u003e\n\u003ch4\u003eCopper Rod Breakdown and Wire Drawing\u003c\/h4\u003e\n\u003cp\u003eProduction starts with a copper rod that is pulled through a series of diamond or tungsten-carbide dies, reducing its cross-section in stages until it reaches the target AWG diameter. Fine gauges may go through dozens of drawing steps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eContinuous Annealing\u003c\/h4\u003e\n\u003cp\u003eThe drawn wire is passed through a controlled-atmosphere annealing furnace to soften the copper, restore its ductility, and remove work-hardening introduced during drawing. Clean, oxide-free copper is essential for good enamel adhesion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eEnamel Application and Curing\u003c\/h4\u003e\n\u003cp\u003eLiquid enamel varnish is applied by felt or die and cured in a long, temperature-controlled oven. The wire makes multiple passes — often 6 to 12 or more — building the film layer by layer to the required build and ensuring complete coverage without pinholes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eLubrication and Spooling\u003c\/h4\u003e\n\u003cp\u003eA thin surface lubricant may be applied to help the wire feed smoothly through high-speed winding machines. The finished enameled copper wire is then spooled onto plastic or metal reels in continuous lengths.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eIn-Line Quality Control\u003c\/h4\u003e\n\u003cp\u003eEvery spool is checked for continuity, insulation defects (pinholes and bare spots via high-voltage spark testing), dimensional consistency, surface finish, and adhesion. Thermal and dielectric properties are verified on sampled production lots.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eApplications of Enameled Copper Wire\u003c\/h2\u003e\n\u003cp\u003eBecause roughly 90% of all electrical energy passes through a motor, transformer, or coil at some point, magnet wire is one of the most widely used conductors in the modern economy.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eElectric Motors and Generators\u003c\/h3\u003e\n\u003cp\u003eIndustrial motors, EV traction motors, appliance motors, servo motors, fans, pumps, and portable generators all rely on enameled copper wire in their stator and rotor windings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eTransformers and Inductors\u003c\/h3\u003e\n\u003cp\u003ePower transformers, distribution transformers, high-frequency switch-mode transformers, toroidal inductors, chokes, and ballasts use solderable or high-temperature magnet wire depending on frequency and voltage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eAutomotive Electrification\u003c\/h3\u003e\n\u003cp\u003eAlternators, starter motors, electric power steering, ABS actuators, on-board chargers, and EV drivetrain components use high-temperature polyester-imide and polyamide-imide magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRelays, Solenoids, and Actuators\u003c\/h3\u003e\n\u003cp\u003eFine-gauge polyurethane magnet wire is wound into relay coils, solenoid valves, contactors, and linear actuators where direct solderability and compact size matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsumer Electronics and Audio\u003c\/h3\u003e\n\u003cp\u003eSpeaker voice coils, headphone drivers, guitar pickups, watch coils, camera actuators, wireless-charging coils, and magnetic sensor coils use self-bonding and fine-gauge enameled wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRenewable Energy and Industry\u003c\/h3\u003e\n\u003cp\u003eWind turbine generators, solar inverters, welding equipment, induction heaters, UPS systems, and magnet assemblies depend on heavy-build, high-temperature magnet wire for long service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRange \/ Options\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eMagnet Wire \/ Enameled Copper Wire \/ Winding Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor material\u003c\/td\u003e\n\u003ctd\u003eHigh-purity copper (round, rectangular, or stranded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAWG range\u003c\/td\u003e\n\u003ctd\u003eFine gauges (50+ AWG) through heavy gauges (4–10 AWG and larger); metric diameters also available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation chemistry\u003c\/td\u003e\n\u003ctd\u003ePolyurethane (UEW), Polyester (PEW), Polyester-Imide (EIW), Polyamide-Imide (AIW), composite dual coats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal class\u003c\/td\u003e\n\u003ctd\u003e130°C \/ 155°C \/ 180°C \/ 200°C \/ 220°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation build\u003c\/td\u003e\n\u003ctd\u003eSingle, heavy, triple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercoat options\u003c\/td\u003e\n\u003ctd\u003eNylon overcoat, self-bonding overcoat, paraffin or nylon lubricant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor shape\u003c\/td\u003e\n\u003ctd\u003eRound, rectangular \/ flat, square, Litz \/ stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpool packaging\u003c\/td\u003e\n\u003ctd\u003ePlastic spools, metal reels, barrel pack; custom put-ups and continuous lengths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards compliance\u003c\/td\u003e\n\u003ctd\u003eNEMA MW 1000, IEC 60317, JIS C 3202; RoHS and REACH compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolderability\u003c\/td\u003e\n\u003ctd\u003eDirect-solderable on polyurethane types; other types require mechanical or thermal stripping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical colors\u003c\/td\u003e\n\u003ctd\u003eNatural amber\/clear; red, green, blue, and other colors available for identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"rk-note\"\u003eAWG (American Wire Gauge) is the standard sizing system used in North America. If your design uses metric diameters, we can cross-reference and supply to the equivalent AWG size.\u003c\/p\u003e\n\u003ch2\u003eValue-Added Processing Services\u003c\/h2\u003e\n\u003cp\u003eBeyond supplying raw enameled copper wire on standard spools, RapidKeen provides processing that saves time and waste on your production line.\u003c\/p\u003e\n\u003ch3\u003eCut-to-Length and Precision Spooling\u003c\/h3\u003e\n\u003cp\u003eWire can be supplied in exact continuous lengths, respooled onto your preferred spool type, or traverse-wound for tangle-free payout on high-speed winding equipment. This reduces setup time and scrap from short ends.\u003c\/p\u003e\n\u003ch3\u003eStranding, Twisting, and Bunching\u003c\/h3\u003e\n\u003cp\u003eMultiple fine magnet wires can be stranded, twisted, or bunched into Litz or multi-strand constructions to reduce high-frequency AC losses or improve flexibility for dynamic coil applications.\u003c\/p\u003e\n\u003ch3\u003eInsulation Stripping and Termination Preparation\u003c\/h3\u003e\n\u003cp\u003eFor non-solderable insulations such as polyester-imide and polyamide-imide, we can supply wire with enamel removed from cut ends using mechanical, thermal, or chemical stripping methods, ready for crimping, welding, or soldering.\u003c\/p\u003e\n\u003ch3\u003eTransposing and Formed Coils\u003c\/h3\u003e\n\u003cp\u003eFor large rectangular magnet wire used in transformers and traction motors, transposing and edge-bending services reduce circulating-current losses and produce coils that drop directly into your assembly.\u003c\/p\u003e\n\u003ch2\u003eWhy Source Magnet Wire from RapidKeen\u003c\/h2\u003e\n\u003cdiv class=\"rk-grid-2\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsistent Enamel Quality\u003c\/h3\u003e\n\u003cp\u003eMulti-pass enameling with in-line spark testing means uniform film thickness, minimal pinholes, and reliable dielectric performance spool after spool — fewer winding stoppages and field failures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eBroad AWG and Insulation Selection\u003c\/h3\u003e\n\u003cp\u003eFrom ultra-fine electronics wire to heavy-gauge motor windings, with every major enamel chemistry and build, you can consolidate enameled copper wire purchases across multiple product lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eApplication-Focused Support\u003c\/h3\u003e\n\u003cp\u003eWe help match thermal class, build, and conductor shape to your voltage, temperature, frequency, and winding method — so you don't over-specify or under-insulate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eFlexible Packaging and Processing\u003c\/h3\u003e\n\u003cp\u003eCustom put-ups, cut lengths, stranding, and stripping services align deliveries with your production schedule and reduce in-house handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire vs. Related Products\u003c\/h2\u003e\n\u003cp\u003eBuyers sometimes compare enameled copper wire with other copper wire products. The distinctions matter for correct selection:\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet Wire \/ Enameled Copper Wire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThin polymer enamel film (micrometers)\u003c\/td\u003e\n\u003ctd\u003eCoil winding: motors, transformers, inductors, solenoids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulated copper hook-up wire\u003c\/td\u003e\n\u003ctd\u003eThick PVC, silicone, or PTFE jacket\u003c\/td\u003e\n\u003ctd\u003ePoint-to-point circuit wiring, harnesses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBare copper wire\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eGrounding, bus bars, craft, jewelry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTinned copper wire\u003c\/td\u003e\n\u003ctd\u003eNone (tin plating for soldering)\u003c\/td\u003e\n\u003ctd\u003eElectrical connections, bus bars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLitz wire\u003c\/td\u003e\n\u003ctd\u003eEnamel film on each individual strand\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency coils, wireless charging, induction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between magnet wire and regular copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eMagnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eIs magnet wire the same as enameled copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eYes. \"Magnet wire\" is the standard North American term, while \"enameled copper wire,\" \"enameled wire,\" and \"winding wire\" describe the same product internationally. All refer to a copper conductor with a cured polymer film insulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eCan enameled copper wire be soldered directly?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003ePolyurethane (UEW) magnet wire is directly solderable — the enamel dissolves in molten solder at around 370–400°C without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped mechanically, thermally, or chemically before soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhich temperature class of magnet wire do I need?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelect a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155°C or 180°C; automotive and compressor windings commonly use 180°C; traction motors and high-reliability industrial drives use 200°C or 220°C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat does AWG mean for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eAWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire: 30 AWG is a fine electronics wire, while 14 AWG is a heavy motor winding wire. The gauge determines current capacity and DC resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is self-bonding magnet wire used for?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelf-bonding magnet wire has an additional adhesive overcoat that fuses turns together when heated, creating a rigid, self-supporting coil without varnish impregnation. It is widely used for speaker voice coils, sensor coils, and intricate coil shapes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhy is copper used instead of aluminum for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eCopper offers higher electrical conductivity, better thermal performance, and easier termination than aluminum. Aluminum magnet wire is sometimes chosen for large, cost-sensitive transformers because it is lighter and cheaper, but it requires a larger cross-section and special joining techniques.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between single, heavy, and triple build insulation?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eBuild refers to enamel thickness. Single build maximizes copper density for low-voltage windings; heavy build is the general-purpose standard; triple build provides extra dielectric withstand for high-voltage or inverter-fed motors exposed to voltage surges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 30px; color: #666; font-size: 14px; border-top: 1px solid #e1f0f2; padding-top: 14px;\"\u003eKeywords: magnet wire, enameled copper wire, enamel coated copper wire, insulated copper wire, winding wire, copper magnet wire, enameled wire, magnetic wire, coil winding wire, AWG magnet wire, solderable magnet wire, high temperature magnet wire, round magnet wire, flat magnet wire, polyurethane magnet wire, polyester enameled wire, polyester-imide magnet wire, polyamide-imide magnet wire, self-bonding magnet wire, motor winding wire, transformer magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Magnet Wire - Enameled Copper Wire\",\n  \"description\": \"Magnet wire (enameled copper wire) with polyurethane, polyester, polyester-imide, and polyamide-imide insulation for motors, transformers, inductors, and coil winding applications.\",\n  \"category\": \"Electrical Wire\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"RapidKeen\"},\n  \"additionalProperty\": [\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Material\", \"value\": \"Copper\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Insulation Type\", \"value\": \"Enamel polymer film\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Thermal Class\", \"value\": \"130°C - 220°C\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Shape\", \"value\": \"Round, Rectangular, Stranded\/Litz\"}\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"What is the difference between magnet wire and regular copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Magnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\"}},\n    {\"@type\": \"Question\", \"name\": \"Is magnet wire the same as enameled copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Magnet wire is the standard North American term, while enameled copper wire, enameled wire, and winding wire describe the same product internationally.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can enameled copper wire be soldered directly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Polyurethane (UEW) magnet wire is directly solderable without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped before soldering.\"}},\n    {\"@type\": \"Question\", \"name\": \"Which temperature class of magnet wire do I need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Select a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155C or 180C; automotive and compressor windings use 180C; traction motors use 200C or 220C.\"}},\n    {\"@type\": \"Question\", \"name\": \"What does AWG mean for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"AWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire and determines current capacity and DC resistance.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is self-bonding magnet wire used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Self-bonding magnet wire has an adhesive overcoat that fuses turns when heated, creating a rigid self-supporting coil without varnish, used for voice coils and sensor coils.\"}},\n    {\"@type\": \"Question\", \"name\": \"Why is copper used instead of aluminum for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Copper offers higher conductivity, better thermal performance, and easier termination. Aluminum is lighter and cheaper but needs a larger cross-section and special joining.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is the difference between single, heavy, and triple build insulation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Build refers to enamel thickness. Single build maximizes copper density, heavy build is the general-purpose standard, and triple build adds dielectric withstand for high-voltage windings.\"}}\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"RapidKeen","offers":[{"title":"38 AWG (0.1 mm) \/ 155°C \/ By the Foot 20 m (65 ft)","offer_id":43597185613883,"sku":null,"price":4.95,"currency_code":"USD","in_stock":true},{"title":"38 AWG (0.1 mm) \/ 155°C \/ Full Spool 1700 m (5577 ft)","offer_id":44049285251131,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-35-awg-enameled-copper-wire","title":"Magnet Wire 35 AWG Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 16px;padding-bottom:10px;border-bottom:3px solid #00AAFF;line-height:1.35}\n.rk-mw h3{font-size:20px;color:#005969;margin:28px 0 10px;line-height:1.4}\n.rk-mw p{margin:0 0 14px}\n.rk-mw .rk-lead{font-size:17px;color:#333;background:#f3fafb;border-left:4px solid #00AAFF;padding:16px 20px;border-radius:0 8px 8px 0;margin:0 0 24px}\n.rk-mw .rk-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-card{background:#fafdfe;border:1px solid #e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3{margin-top:0}\n.rk-mw .rk-tag{display:inline-block;background:#e6f7ff;color:#005969;border:1px solid #b3e5fc;border-radius:20px;padding:5px 14px;font-size:14px;margin:4px 6px 4px 0}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\n\u003cp class=\"rk-lead\"\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e — also known as \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e, enamel-coated copper wire, or winding wire — is a solid copper conductor covered with a very thin, tough layer of polymer insulation. Unlike ordinary insulated copper wire with its thick plastic jacket, magnet wire relies on a micrometer-thin enamel film that lets thousands of turns sit tightly side by side in a coil without short-circuiting. It is the fundamental conductor inside every device that converts electrical energy into a magnetic field.\u003c\/p\u003e\n\n\u003cp\u003eRaw copper is drawn through precision dies to reach the exact AWG size required for each application, then annealed to restore ductility before the enamel is applied and cured. The result is a flexible, high-conductivity copper magnet wire that can be wound into dense, compact coils for transformers, motors, solenoids, instruments, and a wide range of electromagnetic devices.\u003c\/p\u003e\n\n\u003cdiv class=\"rk-grid-2\"\u003e\n  \u003cdiv class=\"rk-card\"\u003e\n    \u003ch3\u003ePolyurethane Insulation — 155°C Rated\u003c\/h3\u003e\n    \u003cp\u003eThe insulation on this enameled copper wire is made from modified polyurethane, a solderable enamel that delivers reliable dielectric performance at a continuous operating temperature of 155°C (311°F). Polyurethane magnet wire can be soldered directly without prior stripping — the film dissolves cleanly into molten solder — making it a preferred choice for fast, efficient coil termination. The enamel coating protects adjacent turns from short-circuiting while adding almost no bulk, maximizing the copper fill factor in every winding.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"rk-card\"\u003e\n    \u003ch3\u003eManufactured to NEMA Magnet Wire Standards\u003c\/h3\u003e\n    \u003cp\u003eEvery spool of this enameled copper wire is produced to meet the dimensional and performance requirements set by the National Electrical Manufacturers Association (NEMA) for magnet wire. NEMA standards cover conductor resistance, insulation build, dielectric strength, and thermal endurance, ensuring consistent, predictable performance across production runs. Whether you are winding a small relay coil or a large transformer, you can rely on uniform enamel coverage and dependable electrical insulation spool after spool.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCommon Applications of Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eBecause of its compact insulation and excellent electrical properties, this 155°C polyurethane magnet wire is widely used across industries for:\u003c\/p\u003e\n\n\u003cdiv\u003e\n  \u003cspan class=\"rk-tag\"\u003eTransformers\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eWound coils\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eElectric motors\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eSolenoids\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eRelays\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eInductors\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eInstruments \u0026amp; meters\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eGenerators\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eSpeaker voice coils\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eSensors \u0026amp; actuators\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top:20px\"\u003eFrom fine-gauge coil winding wire for precision instruments to heavier gauges for motor and transformer windings, enameled copper wire remains the most widely used magnetic wire in electrical manufacturing — valued for its high conductivity, thermal stability, and space-saving enamel insulation.\u003c\/p\u003e\n\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"35 AWG (0.15 mm) \/ 155°C \/ By the Foot 20 m (65 ft)","offer_id":43597307609147,"sku":null,"price":5.0,"currency_code":"USD","in_stock":true},{"title":"35 AWG (0.15 mm) \/ 155°C \/ Full Spool 1000 m (3281 ft)","offer_id":44049333321787,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-30-awg-enameled-copper-wire","title":"Magnet Wire 30 AWG Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 16px;padding-bottom:10px;border-bottom:3px solid #00AAFF;line-height:1.35}\n.rk-mw h3{font-size:20px;color:#005969;margin:28px 0 10px;line-height:1.4}\n.rk-mw p{margin:0 0 14px}\n.rk-mw .rk-lead{font-size:17px;color:#333;background:#f3fafb;border-left:4px solid #00AAFF;padding:16px 20px;border-radius:0 8px 8px 0;margin:0 0 24px}\n.rk-mw .rk-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-card{background:#fafdfe;border:1px solid #e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3{margin-top:0}\n.rk-mw .rk-tag{display:inline-block;background:#e6f7ff;color:#005969;border:1px solid #b3e5fc;border-radius:20px;padding:5px 14px;font-size:14px;margin:4px 6px 4px 0}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\u003cp class=\"rk-lead\"\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e — also known as \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e, enamel-coated copper wire, or winding wire — is a solid copper conductor covered with a very thin, tough layer of polymer insulation. Unlike ordinary insulated copper wire with its thick plastic jacket, magnet wire relies on a micrometer-thin enamel film that lets thousands of turns sit tightly side by side in a coil without short-circuiting. It is the fundamental conductor inside every device that converts electrical energy into a magnetic field.\u003c\/p\u003e\n\u003cp\u003eRaw copper is drawn through precision dies to reach the exact AWG size required for each application, then annealed to restore ductility before the enamel is applied and cured. The result is a flexible, high-conductivity copper magnet wire that can be wound into dense, compact coils for transformers, motors, solenoids, instruments, and a wide range of electromagnetic devices.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid-2\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyurethane Insulation — 155°C Rated\u003c\/h3\u003e\n\u003cp\u003eThe insulation on this enameled copper wire is made from modified polyurethane, a solderable enamel that delivers reliable dielectric performance at a continuous operating temperature of 155°C (311°F). Polyurethane magnet wire can be soldered directly without prior stripping — the film dissolves cleanly into molten solder — making it a preferred choice for fast, efficient coil termination. The enamel coating protects adjacent turns from short-circuiting while adding almost no bulk, maximizing the copper fill factor in every winding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eManufactured to NEMA Magnet Wire Standards\u003c\/h3\u003e\n\u003cp\u003eEvery spool of this enameled copper wire is produced to meet the dimensional and performance requirements set by the National Electrical Manufacturers Association (NEMA) for magnet wire. NEMA standards cover conductor resistance, insulation build, dielectric strength, and thermal endurance, ensuring consistent, predictable performance across production runs. Whether you are winding a small relay coil or a large transformer, you can rely on uniform enamel coverage and dependable electrical insulation spool after spool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eCommon Applications of Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eBecause of its compact insulation and excellent electrical properties, this 155°C polyurethane magnet wire is widely used across industries for:\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cspan class=\"rk-tag\"\u003eTransformers\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eWound coils\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eElectric motors\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eSolenoids\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eRelays\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eInductors\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eInstruments \u0026amp; meters\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eGenerators\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eSpeaker voice coils\u003c\/span\u003e \u003cspan class=\"rk-tag\"\u003eSensors \u0026amp; actuators\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 20px;\"\u003eFrom fine-gauge coil winding wire for precision instruments to heavier gauges for motor and transformer windings, enameled copper wire remains the most widely used magnetic wire in electrical manufacturing — valued for its high conductivity, thermal stability, and space-saving enamel insulation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"30 AWG (0.25 mm) \/ 155°C \/ Full Spool 430 m (1410 ft)","offer_id":43597333364795,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-29-awg-enameled-copper-wire","title":"Magnet Wire 29 AWG Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif; }\n    html { font-size: var(--base-font-size); }\n    .rk-mw-wrap { background-color: var(--light-bg); color: var(--dark-text); line-height: 1.6; font-size: 1rem; }\n    .rk-mw-container { max-width: 1200px; margin: 0 auto; padding: 20px; }\n\n    .rk-mw-hero { background: linear-gradient(135deg, var(--primary-color) 0%, #003640 100%); color: var(--white); padding: 60px 40px; border-radius: 12px; text-align: center; margin-bottom: 40px; border-bottom: 5px solid var(--copper-color); box-shadow: 0 10px 30px rgba(0,89,105,0.15); }\n    .rk-mw-badge { background-color: var(--gold-color); color: #000; font-weight: bold; padding: 8px 20px; border-radius: 50px; text-transform: uppercase; font-size: 0.9rem; display: inline-block; margin-bottom: 20px; letter-spacing: 1px; }\n    .rk-mw-hero h2 { font-size: 3.2rem; font-weight: 800; margin-bottom: 15px; letter-spacing: -0.5px; color: #fff; }\n    .rk-mw-hero p { font-size: 1.3rem; max-width: 800px; margin: 0 auto 30px auto; color: var(--light-blue); }\n    .rk-mw-hero-tags { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }\n    .rk-mw-hero-tag { background: rgba(255,255,255,0.08); padding: 12px 24px; border-radius: 8px; border: 1px solid rgba(158,201,242,0.3); font-size: 1rem; }\n\n    .rk-mw-section { background-color: var(--white); padding: 40px; border-radius: 12px; margin-bottom: 40px; box-shadow: 0 4px 15px rgba(0,0,0,0.03); }\n    .rk-mw-h2 { font-size: 2.2rem; color: var(--primary-color); margin-bottom: 25px; position: relative; padding-bottom: 10px; font-weight: 700; }\n    .rk-mw-h2::after { content: ''; position: absolute; left: 0; bottom: 0; width: 60px; height: 4px; background-color: var(--copper-color); border-radius: 2px; }\n    .rk-mw-h3 { font-size: 1.5rem; color: var(--primary-color); margin-bottom: 15px; font-weight: 700; }\n    .rk-mw-h4 { font-size: 1.25rem; color: var(--primary-color); margin-bottom: 12px; font-weight: 600; }\n    .rk-mw-text { font-size: 1.15rem; color: var(--dark-text); margin-bottom: 20px; text-align: justify; }\n    .rk-mw-text:last-child { margin-bottom: 0; }\n\n    .rk-mw-grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; margin-top: 30px; }\n    .rk-mw-card { background: var(--white); border: 1px solid rgba(0,89,105,0.1); border-top: 4px solid var(--accent-blue); padding: 30px; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; }\n    .rk-mw-card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,170,255,0.1); }\n    .rk-mw-card.copper { border-top-color: var(--copper-color); }\n    .rk-mw-card.gold { border-top-color: var(--gold-color); }\n    .rk-mw-card p { font-size: 1rem; color: #555; text-align: justify; }\n\n    .rk-mw-feature { margin-bottom: 30px; border-bottom: 1px solid #edf2f7; padding-bottom: 30px; }\n    .rk-mw-feature:last-child { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }\n    .rk-mw-feature-tag { display: inline-block; background-color: var(--light-blue); color: var(--primary-color); font-size: 0.85rem; font-weight: 600; padding: 5px 14px; border-radius: 4px; margin-bottom: 12px; }\n    .rk-mw-feature p { color: #4a5568; margin-bottom: 15px; font-size: 1.05rem; }\n    .rk-mw-bullets { list-style: none; }\n    .rk-mw-bullets li { position: relative; padding-left: 22px; margin-bottom: 10px; font-size: 1rem; color: var(--dark-text); }\n    .rk-mw-bullets li::before { content: \"•\"; position: absolute; left: 0; color: var(--copper-color); font-size: 1.6rem; top: -4px; }\n\n    .rk-mw-table-wrap { overflow-x: auto; margin-top: 25px; border-radius: 8px; border: 1px solid #e2e8f0; }\n    .rk-mw-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 1rem; }\n    .rk-mw-table th { background-color: var(--primary-color); color: var(--white); padding: 18px 22px; font-weight: 600; }\n    .rk-mw-table td { padding: 18px 22px; border-bottom: 1px solid #edf2f7; background-color: var(--white); }\n    .rk-mw-table tr:nth-child(even) td { background-color: rgba(158,201,242,0.1); }\n    .rk-mw-table tr:hover td { background-color: rgba(0,170,255,0.05); }\n    .rk-mw-table td:first-child { font-weight: 600; color: var(--primary-color); white-space: nowrap; }\n\n    .rk-mw-callout { background-color: #003640; color: var(--white); padding: 38px; border-radius: 8px; margin-top: 30px; border-left: 6px solid var(--gold-color); }\n    .rk-mw-callout h4 { color: var(--gold-color); font-size: 1.35rem; margin-bottom: 12px; }\n    .rk-mw-callout p { font-size: 1rem; color: #e2e8f0; }\n\n    .rk-mw-apps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 30px; }\n    .rk-mw-app { background-color: rgba(158,201,242,0.15); border: 1px solid var(--light-blue); padding: 28px; border-radius: 8px; transition: all 0.3s ease; }\n    .rk-mw-app:hover { background-color: var(--primary-color); border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"29 AWG (0.3 mm) \/ 155°C \/ Full Spool 260 m (853 ft)","offer_id":43597360136251,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-27-awg-enameled-copper-wire","title":"Solderable Magnet Wire 27 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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}\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"27 AWG (0.35 mm) \/ 155°C \/ Full Spool 200 m (656 ft)","offer_id":43597369704507,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-26-awg-enameled-copper-wire","title":"Solderable Magnet Wire 26 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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border-bottom: 1px solid #edf2f7; background-color: var(--white); }\n    .rk-mw-table tr:nth-child(even) td { background-color: rgba(158,201,242,0.1); }\n    .rk-mw-table tr:hover td { background-color: rgba(0,170,255,0.05); }\n    .rk-mw-table td:first-child { font-weight: 600; color: var(--primary-color); white-space: nowrap; }\n\n    .rk-mw-callout { background-color: #003640; color: var(--white); padding: 38px; border-radius: 8px; margin-top: 30px; border-left: 6px solid var(--gold-color); }\n    .rk-mw-callout h4 { color: var(--gold-color); font-size: 1.35rem; margin-bottom: 12px; }\n    .rk-mw-callout p { font-size: 1rem; color: #e2e8f0; }\n\n    .rk-mw-apps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 30px; }\n    .rk-mw-app { background-color: rgba(158,201,242,0.15); border: 1px solid var(--light-blue); padding: 28px; border-radius: 8px; transition: all 0.3s ease; }\n    .rk-mw-app:hover { background-color: var(--primary-color); border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"26 AWG (0.4 mm) \/ 155°C \/ Full Spool 160 m (525 ft)","offer_id":43597380091963,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"high-temp-pure-copper-magnet-core-enameled-wire-for-motor-transformer-25-awg","title":"Solderable Magnet Wire 25 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"25 AWG (0.45 mm) \/ 155°C \/ Full Spool 130 m (427 ft)","offer_id":43597390676027,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-24-awg-enameled-copper-wire","title":"Solderable Magnet Wire 24 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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margin-bottom: 12px; font-weight: 600; }\n    .rk-mw-text { font-size: 1.15rem; color: var(--dark-text); margin-bottom: 20px; text-align: justify; }\n    .rk-mw-text:last-child { margin-bottom: 0; }\n\n    .rk-mw-grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; margin-top: 30px; }\n    .rk-mw-card { background: var(--white); border: 1px solid rgba(0,89,105,0.1); border-top: 4px solid var(--accent-blue); padding: 30px; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; }\n    .rk-mw-card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,170,255,0.1); }\n    .rk-mw-card.copper { border-top-color: var(--copper-color); }\n    .rk-mw-card.gold { border-top-color: var(--gold-color); }\n    .rk-mw-card p { font-size: 1rem; color: #555; text-align: justify; }\n\n    .rk-mw-feature { margin-bottom: 30px; border-bottom: 1px solid #edf2f7; padding-bottom: 30px; }\n    .rk-mw-feature:last-child { border-bottom: none; 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border-bottom: 1px solid #edf2f7; background-color: var(--white); }\n    .rk-mw-table tr:nth-child(even) td { background-color: rgba(158,201,242,0.1); }\n    .rk-mw-table tr:hover td { background-color: rgba(0,170,255,0.05); }\n    .rk-mw-table td:first-child { font-weight: 600; color: var(--primary-color); white-space: nowrap; }\n\n    .rk-mw-callout { background-color: #003640; color: var(--white); padding: 38px; border-radius: 8px; margin-top: 30px; border-left: 6px solid var(--gold-color); }\n    .rk-mw-callout h4 { color: var(--gold-color); font-size: 1.35rem; margin-bottom: 12px; }\n    .rk-mw-callout p { font-size: 1rem; color: #e2e8f0; }\n\n    .rk-mw-apps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 30px; }\n    .rk-mw-app { background-color: rgba(158,201,242,0.15); border: 1px solid var(--light-blue); padding: 28px; border-radius: 8px; transition: all 0.3s ease; }\n    .rk-mw-app:hover { background-color: var(--primary-color); border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"24 AWG (0.5 mm) \/ 155°C \/ Full Spool 100 m (328 ft)","offer_id":43597400703035,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"high-temp-pure-copper-magnet-core-enameled-wire-for-motor-transformer-23-awg","title":"Solderable Magnet Wire 23 AWG (0.55mm) Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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padding-bottom: 0; margin-bottom: 0; }\n    .rk-mw-feature-tag { display: inline-block; background-color: var(--light-blue); color: var(--primary-color); font-size: 0.85rem; font-weight: 600; padding: 5px 14px; border-radius: 4px; margin-bottom: 12px; }\n    .rk-mw-feature p { color: #4a5568; margin-bottom: 15px; font-size: 1.05rem; }\n    .rk-mw-bullets { list-style: none; }\n    .rk-mw-bullets li { position: relative; padding-left: 22px; margin-bottom: 10px; font-size: 1rem; color: var(--dark-text); }\n    .rk-mw-bullets li::before { content: \"•\"; position: absolute; left: 0; color: var(--copper-color); font-size: 1.6rem; top: -4px; }\n\n    .rk-mw-table-wrap { overflow-x: auto; margin-top: 25px; border-radius: 8px; border: 1px solid #e2e8f0; }\n    .rk-mw-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 1rem; }\n    .rk-mw-table th { background-color: var(--primary-color); color: var(--white); padding: 18px 22px; font-weight: 600; }\n    .rk-mw-table td { padding: 18px 22px; border-bottom: 1px solid #edf2f7; background-color: var(--white); }\n    .rk-mw-table tr:nth-child(even) td { background-color: rgba(158,201,242,0.1); }\n    .rk-mw-table tr:hover td { background-color: rgba(0,170,255,0.05); }\n    .rk-mw-table td:first-child { font-weight: 600; color: var(--primary-color); white-space: nowrap; }\n\n    .rk-mw-callout { background-color: #003640; color: var(--white); padding: 38px; border-radius: 8px; margin-top: 30px; border-left: 6px solid var(--gold-color); }\n    .rk-mw-callout h4 { color: var(--gold-color); font-size: 1.35rem; margin-bottom: 12px; }\n    .rk-mw-callout p { font-size: 1rem; color: #e2e8f0; }\n\n    .rk-mw-apps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 30px; }\n    .rk-mw-app { background-color: rgba(158,201,242,0.15); border: 1px solid var(--light-blue); padding: 28px; border-radius: 8px; transition: all 0.3s ease; }\n    .rk-mw-app:hover { background-color: var(--primary-color); border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"23 AWG (0.55 mm) \/ 155°C \/ Full Spool 90 m (295 ft)","offer_id":43597409943611,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"high-temp-pure-copper-magnet-core-enameled-wire-for-motor-transformer-23-awg-1","title":"Solderable Magnet Wire 23 AWG (0.6mm) Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"23 AWG (0.6 mm) \/ 155°C \/ Full Spool 75 m (246 ft)","offer_id":43597425344571,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-21-awg-enameled-copper-wire","title":"Solderable Magnet Wire 21 AWG (0.7mm) Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"21 AWG (0.7 mm) \/ 155°C \/ Full Spool 55 m (180 ft)","offer_id":43597446021179,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"motor-transformer-pure-copper-high-temp-magnet-enameled-wire-20-awg","title":"Solderable Magnet Wire 20 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"20 AWG (0.8 mm) \/ 155°C \/ Full Spool 40 m (130 ft)","offer_id":43597468401723,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"motor-transformer-pure-copper-high-temp-magnet-enameled-wire-19-awg","title":"Solderable Magnet Wire 19 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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margin-bottom: 12px; font-weight: 600; }\n    .rk-mw-text { font-size: 1.15rem; color: var(--dark-text); margin-bottom: 20px; text-align: justify; }\n    .rk-mw-text:last-child { margin-bottom: 0; }\n\n    .rk-mw-grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; margin-top: 30px; }\n    .rk-mw-card { background: var(--white); border: 1px solid rgba(0,89,105,0.1); border-top: 4px solid var(--accent-blue); padding: 30px; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; }\n    .rk-mw-card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,170,255,0.1); }\n    .rk-mw-card.copper { border-top-color: var(--copper-color); }\n    .rk-mw-card.gold { border-top-color: var(--gold-color); }\n    .rk-mw-card p { font-size: 1rem; color: #555; text-align: justify; }\n\n    .rk-mw-feature { margin-bottom: 30px; border-bottom: 1px solid #edf2f7; padding-bottom: 30px; }\n    .rk-mw-feature:last-child { border-bottom: none; 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border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"19 AWG (0.9 mm) \/ 155°C \/ Full Spool 34 m (112 ft)","offer_id":44057214320699,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"motor-transformer-pure-copper-high-temp-magnet-enameled-wire-18-awg","title":"Solderable Magnet Wire 18 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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padding-bottom: 0; margin-bottom: 0; }\n    .rk-mw-feature-tag { display: inline-block; background-color: var(--light-blue); color: var(--primary-color); font-size: 0.85rem; font-weight: 600; padding: 5px 14px; border-radius: 4px; margin-bottom: 12px; }\n    .rk-mw-feature p { color: #4a5568; margin-bottom: 15px; font-size: 1.05rem; }\n    .rk-mw-bullets { list-style: none; }\n    .rk-mw-bullets li { position: relative; padding-left: 22px; margin-bottom: 10px; font-size: 1rem; color: var(--dark-text); }\n    .rk-mw-bullets li::before { content: \"•\"; position: absolute; left: 0; color: var(--copper-color); font-size: 1.6rem; top: -4px; }\n\n    .rk-mw-table-wrap { overflow-x: auto; margin-top: 25px; border-radius: 8px; border: 1px solid #e2e8f0; }\n    .rk-mw-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 1rem; }\n    .rk-mw-table th { background-color: var(--primary-color); color: var(--white); padding: 18px 22px; font-weight: 600; }\n    .rk-mw-table td { padding: 18px 22px; border-bottom: 1px solid #edf2f7; background-color: var(--white); }\n    .rk-mw-table tr:nth-child(even) td { background-color: rgba(158,201,242,0.1); }\n    .rk-mw-table tr:hover td { background-color: rgba(0,170,255,0.05); }\n    .rk-mw-table td:first-child { font-weight: 600; color: var(--primary-color); white-space: nowrap; }\n\n    .rk-mw-callout { background-color: #003640; color: var(--white); padding: 38px; border-radius: 8px; margin-top: 30px; border-left: 6px solid var(--gold-color); }\n    .rk-mw-callout h4 { color: var(--gold-color); font-size: 1.35rem; margin-bottom: 12px; }\n    .rk-mw-callout p { font-size: 1rem; color: #e2e8f0; }\n\n    .rk-mw-apps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 30px; }\n    .rk-mw-app { background-color: rgba(158,201,242,0.15); border: 1px solid var(--light-blue); padding: 28px; border-radius: 8px; transition: all 0.3s ease; }\n    .rk-mw-app:hover { background-color: var(--primary-color); border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"18 AWG (1.0 mm) \/ 155°C \/ Full Spool 28 m (92 ft)","offer_id":43597517619259,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"motor-transformer-pure-copper-high-temp-magnet-enameled-wire-17-awg","title":"Solderable Magnet Wire 17 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"17 AWG (1.2 mm) \/ 130°C \/ Full Spool 19 m (62 ft)","offer_id":43597528137787,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"motor-transformer-pure-copper-high-temp-magnet-enameled-wire-15-awg","title":"Solderable Magnet Wire 15 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"15 AWG (1.5 mm) \/ 130°C \/ Full Spool 11 m (36 ft)","offer_id":43597537509435,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"motor-transformer-pure-copper-high-temp-magnet-enameled-wire-12-awg","title":"Solderable Magnet Wire 12 AWG Enameled Copper Wire","description":"\u003cstyle\u003e\n    :root {\n        --primary-color: #005969;\n        --accent-blue: #00AAFF;\n        --light-blue: #9EC9F2;\n        --copper-color: #b87333;\n        --gold-color: #d4af37;\n        --dark-text: #2d3748;\n        --light-bg: #f7fafc;\n        --white: #ffffff;\n        --base-font-size: 18px;\n    }\n    * { box-sizing: border-box; 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border-color: var(--primary-color); }\n    .rk-mw-app h4 { font-size: 1.2rem; margin-bottom: 12px; color: var(--primary-color); }\n    .rk-mw-app:hover h4 { color: var(--gold-color); }\n    .rk-mw-app p { font-size: 0.95rem; color: #555; }\n    .rk-mw-app:hover p { color: var(--light-blue); }\n\n    .rk-mw-guide { background-color: #fff; border: 1px dashed var(--copper-color); padding: 32px; border-radius: 8px; margin-top: 30px; }\n    .rk-mw-guide h4 { color: var(--copper-color); margin-bottom: 18px; font-size: 1.3rem; }\n\n    @media (max-width: 1024px) {\n        :root { --base-font-size: 17px; }\n        .rk-mw-hero h2 { font-size: 2.8rem; }\n        .rk-mw-h2 { font-size: 2rem; }\n    }\n    @media (max-width: 768px) {\n        :root { --base-font-size: 16px; }\n        .rk-mw-hero { padding: 40px 20px; }\n        .rk-mw-hero h2 { font-size: 2.2rem; }\n        .rk-mw-hero p { font-size: 1.15rem; }\n        .rk-mw-section { padding: 25px; }\n        .rk-mw-h2 { font-size: 1.8rem; }\n        .rk-mw-h3 { font-size: 1.35rem; }\n    }\n    @media (max-width: 480px) {\n        :root { --base-font-size: 15px; }\n        .rk-mw-hero h2 { font-size: 1.9rem; }\n        .rk-mw-hero-tags { gap: 15px; }\n        .rk-mw-hero-tag { padding: 10px 18px; }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-mw-wrap\"\u003e\n\u003cdiv class=\"rk-mw-container\"\u003e\n\n    \u003cdiv class=\"rk-mw-hero\"\u003e\n        \u003cspan class=\"rk-mw-badge\"\u003eDirect-Solderable Winding Wire\u003c\/span\u003e\n        \u003ch2\u003eDirect-Solderable Magnet Wire\u003c\/h2\u003e\n        \u003cp\u003eProfessional-grade solderable enameled copper wire that tins directly without stripping — engineered for efficient termination, reliable dielectric strength, and high-speed coil winding in relays, solenoids, transformers, and electronic coils.\u003c\/p\u003e\n        \u003cdiv class=\"rk-mw-hero-tags\"\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eHigh-Purity Copper Conductor\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eDirect-Solderable Enamel\u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-hero-tag\"\u003eOptimized for Automatic Winding\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Overview\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Direct-solderable magnet wire is a copper conductor coated with a specially formulated polyurethane enamel that melts and dissolves in molten solder, allowing the wire to be tinned and terminated without mechanically stripping the insulation. This eliminates the need for separate enamel removal steps such as scraping, chemical stripping, or thermal burn-off, making solderable enameled wire a preferred choice for high-volume coil production where termination speed and consistency are critical.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Our direct-solderable enameled copper wire is built on a high-purity oxygen-free copper core that delivers consistently low electrical resistance and high current-carrying capacity. The polyurethane enamel insulation is applied through a multi-pass enameling process, forming a uniform, concentric, pinhole-free coating that solders cleanly at controlled temperatures while still providing dependable dielectric protection between adjacent coil turns.\n        \u003c\/p\u003e\n        \u003cp class=\"rk-mw-text\"\u003e\n            Every spool of this magnet wire is optimized for automated high-speed coil winding. The surface is engineered for low friction and smooth layer crossover, while the annealed copper core provides balanced elongation and flexibility. The result is enameled wire that feeds cleanly, bends tightly, and retains coil shape without enamel cracking or peeling — and then solders directly at the termination stage to streamline your assembly process.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eDirect Solderability\u003c\/h3\u003e\n                \u003cp\u003eThe polyurethane enamel on this magnet wire breaks down in molten solder at designated temperatures, so the enameled copper wire can be tinned and joined directly without stripping. This reduces termination time, eliminates scrap from mechanical stripping damage, and improves joint consistency in relay, solenoid, and transformer coil assembly.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eElectrical Efficiency\u003c\/h3\u003e\n                \u003cp\u003eThe high-purity copper core in our solderable enameled wire minimizes resistive losses and heat generation, supporting the energy efficiency of motor windings, transformer coils, and inductor assemblies. Consistent conductivity across every spool of magnet wire ensures predictable electromagnetic performance in mass production.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSmooth Winding Performance\u003c\/h3\u003e\n                \u003cp\u003eA low-friction surface finish allows this magnet wire to cross over and layer cleanly during high-tension automatic winding. The enameled wire resists snagging, tangling, and surface scuffing, helping coil manufacturers achieve uniform, compact windings with fewer rejects before direct soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Engineering Characteristics\u003c\/h2\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eInsulation System\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eSolderable Polyurethane Enamel Coating\u003c\/h3\u003e\n            \u003cp\u003eThe insulation on our direct-solderable enameled copper wire is built through repeated application and heat-curing cycles, producing a concentric polyurethane enamel film with no thin spots or weak points. This multi-layer construction gives the magnet wire dependable dielectric strength during winding and service, while still allowing the enamel to decompose cleanly in the solder pot for fast, reliable terminations.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eDirectly solderable at controlled temperatures without mechanical or chemical enamel stripping.\u003c\/li\u003e\n                \u003cli\u003eStrong resistance to scrape and abrasion during coil winding, insertion, and handling.\u003c\/li\u003e\n                \u003cli\u003eLow moisture absorption helps preserve dielectric strength in humid operating environments.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eMechanical Properties\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eElongation, Flexibility, and Adhesion\u003c\/h3\u003e\n            \u003cp\u003eThe copper conductor in our enameled wire is annealed under controlled conditions to achieve a precise balance of softness and tensile strength. This allows the magnet wire to stretch smoothly under winding tension, bend around small radii, and conform to compact coil geometries without conductor necking or enamel separation.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eLow spring-back helps wound coils hold their shape immediately after forming, reducing coil expansion and looseness.\u003c\/li\u003e\n                \u003cli\u003eStrong enamel-to-copper adhesion prevents peeling and flaking during torsion, bending, and high-speed unspooling.\u003c\/li\u003e\n                \u003cli\u003eFlexibility is maintained across both cold and warm operating conditions, making the enameled wire suitable for diverse coil applications.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eDielectric Performance\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eReliable Inter-Turn Insulation\u003c\/h3\u003e\n            \u003cp\u003eMagnet wire must reliably separate adjacent coil turns operating at different voltage potentials. Our solderable enameled copper wire uses a dense, continuous polyurethane film that delivers consistent breakdown voltage and stable inter-turn insulation across the full length of every spool.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eControlled film concentricity minimizes the risk of pinholes, micro-voids, and localized voltage stress points.\u003c\/li\u003e\n                \u003cli\u003eConsistent insulation thickness supports reliable performance in low-to-moderate voltage coil designs.\u003c\/li\u003e\n                \u003cli\u003eSupports long-term insulation reliability, reducing the risk of turn-to-turn shorts and premature winding failure.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-feature\"\u003e\n            \u003cspan class=\"rk-mw-feature-tag\"\u003eTermination Advantage\u003c\/span\u003e\n            \u003ch3 class=\"rk-mw-h3\"\u003eStreamlined Coil Assembly Without Stripping\u003c\/h3\u003e\n            \u003cp\u003eConventional enameled wire requires the insulation to be removed before soldering, adding process steps and risking conductor damage. Direct-solderable magnet wire removes this stage entirely: the coil leads can be tinned and soldered in one operation, reducing labor, improving throughput, and producing cleaner, more consistent solder joints on automated termination lines.\u003c\/p\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003eNo scraping, chemical stripping, or burn-off required before soldering coil terminations.\u003c\/li\u003e\n                \u003cli\u003eReduces risk of nicked or broken conductors caused by mechanical enamel removal.\u003c\/li\u003e\n                \u003cli\u003eIdeal for high-volume production of relays, solenoids, small transformers, and electronic coils where every termination must be uniform and reliable.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Enameled Wire Technical Specifications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eOur direct-solderable magnet wire range covers a broad spectrum of conductor sizes and insulation builds to support diverse coil winding and termination requirements. The table below summarizes the available configuration options for our solderable enameled copper wire.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-table-wrap\"\u003e\n            \u003ctable class=\"rk-mw-table\"\u003e\n                \u003cthead\u003e\n                    \u003ctr\u003e\n                        \u003cth\u003eSpecification\u003c\/th\u003e\n                        \u003cth\u003eAvailable Range \/ Description\u003c\/th\u003e\n                    \u003c\/tr\u003e\n                \u003c\/thead\u003e\n                \u003ctbody\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eConductor Material\u003c\/td\u003e\n                        \u003ctd\u003eHigh-purity oxygen-free copper for low resistance and high conductivity in magnet wire applications\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eEnamel Insulation Type\u003c\/td\u003e\n                        \u003ctd\u003eDirect-solderable polyurethane enamel; additional insulation formulations available on request\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eWire Diameter Range\u003c\/td\u003e\n                        \u003ctd\u003eFine gauge solderable magnet wire from 0.02 mm up to 1.00 mm and above\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eInsulation Build\u003c\/td\u003e\n                        \u003ctd\u003eSingle, heavy, and triple enamel builds to match different voltage and slot-fill requirements\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eThermal Class\u003c\/td\u003e\n                        \u003ctd\u003eSolderable enameled wire rated for continuous operation up to 155°C (Class F), with higher-temperature options available\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSolderability\u003c\/td\u003e\n                        \u003ctd\u003eDirectly solderable in molten solder without enamel stripping; soldering temperature varies by wire diameter\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eDielectric Strength\u003c\/td\u003e\n                        \u003ctd\u003eConsistent breakdown voltage that scales with enamel thickness for reliable inter-turn insulation\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eElongation\u003c\/td\u003e\n                        \u003ctd\u003eControlled elongation characteristics tuned to conductor diameter for smooth, crack-free winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                    \u003ctr\u003e\n                        \u003ctd\u003eSpool Packaging\u003c\/td\u003e\n                        \u003ctd\u003ePlastic spools in various sizes suited to manual, semi-automatic, and high-speed automatic winding\u003c\/td\u003e\n                    \u003c\/tr\u003e\n                \u003c\/tbody\u003e\n            \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eWhen to Choose Direct-Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is the preferred choice when coil terminations need to be soldered quickly and consistently, especially in high-volume manufacturing. It is widely used in relays, solenoids, small transformers, inductors, voice coils, and electronic coils where stripping the enamel by hand or machine would slow production and risk damaging fine conductors. For applications involving higher operating temperatures or severe mechanical stress, non-solderable enameled wire with polyesterimide or polyamide-imide insulation may be more appropriate; our team can help you select the right magnet wire construction for each coil design.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-callout\"\u003e\n            \u003ch4\u003eIn-Line Quality Inspection for Every Spool of Solderable Magnet Wire\u003c\/h4\u003e\n            \u003cp\u003eEvery meter of our direct-solderable enameled copper wire undergoes continuous in-line inspection during production. Laser diameter monitoring ensures consistent conductor and overall dimensions, while high-voltage spark testing detects any enamel discontinuity before the magnet wire is spooled and packaged. Solderability is also verified to confirm that the enamel breaks down cleanly and the copper wets properly, ensuring reliable terminations on your production line.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Applications\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled copper wire is used wherever compact electromagnetic coils require fast, reliable soldered terminations. Our magnet wire serves a broad range of industries and product categories, including the following major application sectors.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-apps\"\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eRelays and Contactors\u003c\/h4\u003e\n                \u003cp\u003eFine gauge solderable magnet wire is wound into relay coils where direct tinning of lead wires speeds up assembly and ensures uniform electrical contacts across high-volume production runs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSolenoids and Valves\u003c\/h4\u003e\n                \u003cp\u003eSolenoid coils, pneumatic and hydraulic valve coils, and electromagnetic actuator coils use direct-solderable enameled wire for efficient termination and consistent inter-turn insulation.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eSmall Transformers and Inductors\u003c\/h4\u003e\n                \u003cp\u003eSignal transformers, pulse transformers, common-mode chokes, and PCB inductors are wound with solderable magnet wire that connects directly to terminals or pins without enamel removal.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAudio Voice Coils\u003c\/h4\u003e\n                \u003cp\u003eSpeaker voice coils, headphone drivers, and microphone coils use fine enameled copper wire where direct solderability simplifies lead-out connections and compact winding is essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eAutomotive Sensor Coils\u003c\/h4\u003e\n                \u003cp\u003eCrankshaft sensors, ABS sensor coils, ignition module coils, and other automotive electromagnetic components rely on solderable magnet wire for dependable connections in compact packages.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eElectronic Coils and Chokes\u003c\/h4\u003e\n                \u003cp\u003eSwitched-mode power supply chokes, filter inductors, line filters, and toroidal coils use direct-solderable enameled wire for fast termination on bobbins, pins, and PCBs.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eHousehold Appliance Controls\u003c\/h4\u003e\n                \u003cp\u003eTimer coils, relay coils in washing machines and air conditioners, and small motor control coils benefit from the efficient soldering and reliable insulation of this magnet wire.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-app\"\u003e\n                \u003ch4\u003eInstrumentation and Meters\u003c\/h4\u003e\n                \u003cp\u003eMoving-coil meters, measuring instrument coils, and precision electromagnetic components use fine gauge solderable enameled copper wire for accurate winding and clean terminations.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eMagnet Wire Insulation Types at a Glance\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eWhile this page focuses on direct-solderable magnet wire, different coil applications may call for different enameled wire constructions. The summary below helps you compare insulation options when selecting enameled copper wire for a specific product.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyurethane (Solderable)\u003c\/h3\u003e\n                \u003cp\u003ePolyurethane magnet wire is directly solderable without stripping, making it ideal for relays, solenoids, small transformers, and electronic coils. It offers good moisture resistance and stable dielectric performance in low-to-moderate temperature applications, and it is the default choice when termination efficiency is a priority.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyester \/ Polyesterimide\u003c\/h3\u003e\n                \u003cp\u003ePolyester and polyesterimide enameled wire provide higher thermal ratings and improved thermal aging resistance for general-purpose motors, compressors, and industrial transformers. These magnet wire types are not directly solderable and require enamel removal before termination, but they withstand sustained heat and electrical stress well.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003ePolyamide-Imide Overcoat\u003c\/h3\u003e\n                \u003cp\u003eDual-coat magnet wire with a polyamide-imide overcoat delivers the highest abrasion resistance, thermal performance, and chemical durability. It is specified for hermetic motors, traction motors, and high-temperature coils where reliability under severe conditions outweighs the need for direct solderability.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3 class=\"rk-mw-h3\" style=\"margin-top:35px;\"\u003eInsulation Build Options for Solderable Magnet Wire\u003c\/h3\u003e\n        \u003cp class=\"rk-mw-text\"\u003eDirect-solderable enameled wire is available in different insulation builds to balance coil compactness against dielectric strength. Single-build enameled wire offers the smallest overall diameter and is preferred where slot or winding space is tight and voltage stress is moderate. Heavy-build and triple-build enameled copper wire provide thicker polyurethane insulation for higher voltage protection and improved mechanical resistance, with a slightly larger overall diameter. Choosing the appropriate build ensures that the magnet wire meets both the electrical clearance requirements and the dimensional constraints of the coil design while retaining reliable direct-solderable performance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"rk-mw-section\"\u003e\n        \u003ch2 class=\"rk-mw-h2\"\u003eSolderable Magnet Wire Packaging, Storage, and Handling\u003c\/h2\u003e\n        \u003cp class=\"rk-mw-text\"\u003eProper packaging, storage, and handling preserve the solderability, electrical performance, and mechanical integrity of direct-solderable enameled copper wire from the factory to the winding machine. Following these recommendations helps prevent enamel damage, oxidation, and contamination that can compromise magnet wire termination and winding quality.\u003c\/p\u003e\n\n        \u003cdiv class=\"rk-mw-grid3\"\u003e\n            \u003cdiv class=\"rk-mw-card copper\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eSpool Design\u003c\/h3\u003e\n                \u003cp\u003eOur solderable enameled wire is wound onto reinforced plastic spools engineered for smooth, tangle-free unspooling on both manual and automatic winding equipment. Balanced winding tension prevents overlaps, snags, and sudden snatching that could stretch the magnet wire or damage the enamel surface before soldering.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eProtective Packaging\u003c\/h3\u003e\n                \u003cp\u003eEach spool of direct-solderable enameled copper wire is individually protected to prevent physical damage, dust contamination, and moisture exposure during transit and storage. Clean packaging is especially important for solderable magnet wire, since surface contamination can interfere with solder wetting at termination.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-mw-card gold\"\u003e\n                \u003ch3 class=\"rk-mw-h3\"\u003eEnvironmental Protection\u003c\/h3\u003e\n                \u003cp\u003eThe protective enclosure shields the enameled wire from humidity, atmospheric pollutants, and abrasive particles that could degrade insulation performance, oxidize the copper, or impair solderability before the coil is assembled and soldered.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-mw-guide\"\u003e\n            \u003ch4\u003eStorage and Handling Recommendations for Solderable Enameled Wire\u003c\/h4\u003e\n            \u003cul class=\"rk-mw-bullets\"\u003e\n                \u003cli\u003e\n\u003cstrong\u003eStorage conditions:\u003c\/strong\u003e Store solderable magnet wire in a clean, dry, dust-free environment with temperatures between 10°C and 30°C and relative humidity below 60% to prevent copper oxidation that can reduce solder wetting.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAvoid impacts:\u003c\/strong\u003e Handle enameled wire spools carefully. Dropping or striking a spool can crack the flanges or nick the polyurethane enamel, creating weak points that lead to dielectric failure or poor soldering.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eControl unspooling tension:\u003c\/strong\u003e Set winding machine tension appropriately for the magnet wire diameter. Excessive tension over-stretches the enameled copper wire, reducing conductor cross-section and thinning the insulation film.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKeep solder areas clean:\u003c\/strong\u003e When terminating direct-solderable enameled wire, use clean, temperature-controlled solder pots and appropriate flux to ensure the polyurethane enamel breaks down fully and the copper wets consistently.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003ePrevent chemical exposure:\u003c\/strong\u003e Keep enameled wire away from corrosive vapors, acidic environments, and moisture until the coil has been soldered and, where applicable, varnish-impregnated or encapsulated.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eFirst-in, first-out rotation:\u003c\/strong\u003e Use solderable enameled copper wire in the order it is received to minimize storage time and ensure the magnet wire is processed while its solderability and surface condition are at their best.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"12 AWG (2.0 mm) \/ 130°C \/ Full Spool 6 m (20 ft)","offer_id":43597559955515,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-42-awg-enameled-copper-wire-for-coil-winding","title":"Magnet Wire 42 AWG Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 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#e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3,.rk-mw .rk-card h4{margin-top:0}\n.rk-mw .rk-table-wrap{overflow-x:auto;margin:16px 0 24px;-webkit-overflow-scrolling:touch}\n.rk-mw table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}\n.rk-mw th{background:#005969;color:#fff;text-align:left;padding:12px 14px;font-weight:600;white-space:nowrap}\n.rk-mw td{padding:11px 14px;border-bottom:1px solid #e6eef0;vertical-align:top}\n.rk-mw tr:nth-child(even) td{background:#f6fbfc}\n.rk-mw .rk-note{background:#fff8e6;border-left:4px solid #f5b301;padding:14px 18px;border-radius:0 8px 8px 0;margin:16px 0;font-size:15px}\n.rk-mw .rk-kw{font-weight:600;color:#005969}\n.rk-mw .rk-process{counter-reset:step;list-style:none;padding-left:0}\n.rk-mw .rk-process li{position:relative;padding:0 0 18px 48px;border-left:2px solid #b3e5fc;margin-left:16px}\n.rk-mw .rk-process li::before{counter-increment:step;content:counter(step);position:absolute;left:-17px;top:0;width:32px;height:32px;background:#00AAFF;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}\n.rk-mw .rk-process li:last-child{border-left:2px solid transparent;padding-bottom:0}\n.rk-mw .rk-process h4{margin:4px 0 6px}\n.rk-mw .rk-faq{border:1px solid #e1f0f2;border-radius:10px;margin-bottom:12px;overflow:hidden}\n.rk-mw .rk-faq h3{margin:0;padding:16px 20px;background:#f3fafb;font-size:17px}\n.rk-mw .rk-faq h3::before{content:\"Q \";color:#00AAFF;font-weight:700}\n.rk-mw .rk-faq .rk-a{padding:0 20px 16px}\n@media(max-width:900px){.rk-mw .rk-grid{grid-template-columns:repeat(2,1fr)}}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid,.rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n  .rk-mw table{font-size:14px}\n  .rk-mw th,.rk-mw td{padding:9px 10px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\u003cp class=\"rk-lead\"\u003e\u003cspan class=\"rk-kw\"\u003eMagnet wire\u003c\/span\u003e — also known as \u003cspan class=\"rk-kw\"\u003eenameled copper wire\u003c\/span\u003e, winding wire, or enamel-coated copper wire — is a copper conductor covered by a thin, tough polymer film that lets thousands of turns sit side by side in a coil without short-circuiting. It is the fundamental conductor inside every motor, transformer, inductor, and electromagnetic device that converts electricity into motion, voltage, or magnetic force.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e is an insulated electrical conductor, almost always copper (and sometimes aluminum), designed to be wound into tight coils. The term \"magnet wire\" is the standard industry name in North America and is defined by the NEMA MW 1000 standard; internationally the same product is called \u003cstrong\u003eenameled wire\u003c\/strong\u003e or \u003cstrong\u003ewinding wire\u003c\/strong\u003e. Despite the word \"enamel,\" the insulation is not glassy porcelain or paint — it is one or more layers of high-performance polymer film applied and cured in precise passes.\u003c\/p\u003e\n\u003cp\u003eThe key difference between \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e and ordinary insulated copper wire is insulation thickness. A typical plastic-jacketed wire adds a millimeter or more of insulation, while magnet wire's enamel film is only a few micrometers thick. That is what allows compact, high-density coil windings where the copper fill factor — the share of cross-section actually occupied by copper — is as high as possible.\u003c\/p\u003e\n\u003ch3\u003eThe Conductor: High-Purity Copper\u003c\/h3\u003e\n\u003cp\u003eThe conductor is electrolytically refined or oxygen-free copper, selected for its superior electrical conductivity, thermal conductivity, and ductility. Copper's low resistance cuts energy loss and heat rise, and after annealing it becomes soft enough to draw down to very fine gauges and wind around sharp bends without work-hardening or breaking.\u003c\/p\u003e\n\u003ch3\u003eThe Insulation: Enamel Polymer Film\u003c\/h3\u003e\n\u003cp\u003eThe enamel coating is applied as a liquid varnish and cured at high temperature, building up a uniform, flexible, dielectric film in multiple passes. Depending on the chemistry, the insulation provides a specific balance of thermal endurance, dielectric strength, solderability, abrasion resistance, and resistance to solvents and refrigerants. Some constructions add a nylon overcoat or a self-bonding top layer for heat-activated adhesion.\u003c\/p\u003e\n\u003ch3\u003eHow Enameled Copper Wire Works in a Coil\u003c\/h3\u003e\n\u003cp\u003eWhen current flows through a coil of magnet wire, every turn contributes to a concentrated electromagnetic field. The enamel film forces current to follow the long helical path of the conductor instead of jumping between touching turns. The thinner and more consistent the insulation, the more copper fits into the same winding window — and the stronger, smaller, and more efficient the resulting motor, transformer, or solenoid.\u003c\/p\u003e\n\u003ch2\u003eTypes of Enamel Insulation\u003c\/h2\u003e\n\u003cp\u003eChoosing the right enamel chemistry is the most important decision when selecting magnet wire. Each insulation type is engineered for a different temperature range, soldering method, and operating environment.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyurethane (UEW \/ PUR)\u003c\/h3\u003e\n\u003cp\u003eSolderable directly at moderate temperatures without stripping the enamel — the film dissolves into the solder joint. Best for small transformers, relays, timers, clock coils, magnetic heads, and fine-wire electronics where easy termination matters.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester (PEW)\u003c\/h3\u003e\n\u003cp\u003eThe most widely used general-purpose enamel, offering a dense, uniform film with good dielectric strength and mechanical toughness at a competitive cost. The workhorse for common motors, appliances, and general winding applications.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 155°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester-Imide (EIW)\u003c\/h3\u003e\n\u003cp\u003eAn upgraded polyester with superior heat shock resistance, solvent resistance, and refrigerant compatibility. Common in hermetic motors, compressors, automotive alternators, and appliances exposed to high operating temperatures.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyamide-Imide (AIW)\u003c\/h3\u003e\n\u003cp\u003eThe premium high-temperature enamel, with exceptional thermal endurance, abrasion resistance, and resistance to overload conditions. Often used as a topcoat over polyester-imide for the highest performance in traction motors, industrial drives, and aerospace windings.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 200°C to 220°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eSelf-Bonding (Bondable)\u003c\/h3\u003e\n\u003cp\u003eMagnet wire with a thermoplastic or thermosetting overcoat that fuses adjacent turns when heated, producing a self-supporting coil without an impregnating varnish. Ideal for voice coils, speaker coils, sensor coils, and complex free-standing windings.\u003c\/p\u003e\n\u003ch4\u003eActivation\u003c\/h4\u003e\n\u003cp\u003eHeat, solvent, or resistance heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eNylon-Overcoated\u003c\/h3\u003e\n\u003cp\u003eA thin polyamide top layer added over the base enamel to improve winding lubricity, abrasion resistance, and chemical resistance. Frequently specified for high-speed automatic winding where the wire must survive tight, fast lay-down.\u003c\/p\u003e\n\u003ch4\u003eTypical base coats\u003c\/h4\u003e\n\u003cp\u003ePolyester or polyester-imide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire Forms and Shapes\u003c\/h2\u003e\n\u003cp\u003eEnameled copper wire is supplied in several conductor geometries to match different winding techniques and slot-fill requirements.\u003c\/p\u003e\n\u003ch3\u003eRound Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eThe standard form for the majority of motor, transformer, relay, and coil applications. Round magnet wire is available across a very wide AWG range — from fine gauges under 50 AWG for precision electronics to heavy gauges above 10 AWG for large motor and transformer windings.\u003c\/p\u003e\n\u003ch3\u003eRectangular and Flat Magnet Wire\u003c\/h3\u003e\n\u003cp\u003eRectangular or square enameled copper wire packs more copper into a given slot than round wire, raising the fill factor and improving thermal performance. It is used in high-power traction motors, large generator coils, welding transformers, and high-current inductors where space efficiency is critical.\u003c\/p\u003e\n\u003ch3\u003eMulti-Strand and Litz Constructions\u003c\/h3\u003e\n\u003cp\u003eFor high-frequency applications, multiple fine enameled wires are twisted or braided together into \u003cstrong\u003eLitz wire\u003c\/strong\u003e to reduce skin-effect and proximity-effect losses. Stranded magnet wire constructions also offer greater flexibility for bend-intensive coil designs.\u003c\/p\u003e\n\u003ch2\u003eTemperature Class and Insulation Build\u003c\/h2\u003e\n\u003ch3\u003eUnderstanding Thermal Class\u003c\/h3\u003e\n\u003cp\u003eEvery enameled copper wire carries a thermal class that indicates the maximum sustained temperature the insulation can endure over a rated service life — commonly 20,000 hours. Choosing a class with headroom above the actual operating temperature extends motor and transformer life.\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Class\u003c\/th\u003e\n\u003cth\u003eMaximum Sustained Temperature\u003c\/th\u003e\n\u003cth\u003eTypical Enamel Chemistry\u003c\/th\u003e\n\u003cth\u003eCommon Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e130°C (Class B)\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003ctd\u003ePolyurethane, Polyester\u003c\/td\u003e\n\u003ctd\u003eSmall transformers, relays, general coils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e155°C (Class F)\u003c\/td\u003e\n\u003ctd\u003e155°C\u003c\/td\u003e\n\u003ctd\u003ePolyester, Polyurethane\u003c\/td\u003e\n\u003ctd\u003eAppliance motors, fans, lighting ballasts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e180°C (Class H)\u003c\/td\u003e\n\u003ctd\u003e180°C\u003c\/td\u003e\n\u003ctd\u003ePolyester-Imide\u003c\/td\u003e\n\u003ctd\u003eCompressors, automotive alternators, power tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200°C (Class N)\u003c\/td\u003e\n\u003ctd\u003e200°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide over EIW\u003c\/td\u003e\n\u003ctd\u003eTraction motors, industrial drives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e220°C (Class R)\u003c\/td\u003e\n\u003ctd\u003e220°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide, aromatic polyimide\u003c\/td\u003e\n\u003ctd\u003eAerospace, high-performance generators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eInsulation Build: Single, Heavy, and Triple\u003c\/h3\u003e\n\u003cp\u003e\"Build\" refers to the total thickness of the enamel film. A heavier build increases dielectric withstand voltage but slightly reduces copper fill factor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle build\u003c\/strong\u003e — thinnest insulation; maximum copper density for low-voltage, well-supported windings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy build\u003c\/strong\u003e — the most common choice; added dielectric margin for typical motor and transformer voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple build\u003c\/strong\u003e — thickest film; specified for high-voltage or surge-prone windings and for inverter-fed motors exposed to fast voltage pulses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow Magnet Wire Is Made\u003c\/h2\u003e\n\u003col class=\"rk-process\"\u003e\n\u003cli\u003e\n\u003ch4\u003eCopper Rod Breakdown and Wire Drawing\u003c\/h4\u003e\n\u003cp\u003eProduction starts with a copper rod that is pulled through a series of diamond or tungsten-carbide dies, reducing its cross-section in stages until it reaches the target AWG diameter. Fine gauges may go through dozens of drawing steps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eContinuous Annealing\u003c\/h4\u003e\n\u003cp\u003eThe drawn wire is passed through a controlled-atmosphere annealing furnace to soften the copper, restore its ductility, and remove work-hardening introduced during drawing. Clean, oxide-free copper is essential for good enamel adhesion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eEnamel Application and Curing\u003c\/h4\u003e\n\u003cp\u003eLiquid enamel varnish is applied by felt or die and cured in a long, temperature-controlled oven. The wire makes multiple passes — often 6 to 12 or more — building the film layer by layer to the required build and ensuring complete coverage without pinholes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eLubrication and Spooling\u003c\/h4\u003e\n\u003cp\u003eA thin surface lubricant may be applied to help the wire feed smoothly through high-speed winding machines. The finished enameled copper wire is then spooled onto plastic or metal reels in continuous lengths.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eIn-Line Quality Control\u003c\/h4\u003e\n\u003cp\u003eEvery spool is checked for continuity, insulation defects (pinholes and bare spots via high-voltage spark testing), dimensional consistency, surface finish, and adhesion. Thermal and dielectric properties are verified on sampled production lots.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eApplications of Enameled Copper Wire\u003c\/h2\u003e\n\u003cp\u003eBecause roughly 90% of all electrical energy passes through a motor, transformer, or coil at some point, magnet wire is one of the most widely used conductors in the modern economy.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eElectric Motors and Generators\u003c\/h3\u003e\n\u003cp\u003eIndustrial motors, EV traction motors, appliance motors, servo motors, fans, pumps, and portable generators all rely on enameled copper wire in their stator and rotor windings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eTransformers and Inductors\u003c\/h3\u003e\n\u003cp\u003ePower transformers, distribution transformers, high-frequency switch-mode transformers, toroidal inductors, chokes, and ballasts use solderable or high-temperature magnet wire depending on frequency and voltage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eAutomotive Electrification\u003c\/h3\u003e\n\u003cp\u003eAlternators, starter motors, electric power steering, ABS actuators, on-board chargers, and EV drivetrain components use high-temperature polyester-imide and polyamide-imide magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRelays, Solenoids, and Actuators\u003c\/h3\u003e\n\u003cp\u003eFine-gauge polyurethane magnet wire is wound into relay coils, solenoid valves, contactors, and linear actuators where direct solderability and compact size matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsumer Electronics and Audio\u003c\/h3\u003e\n\u003cp\u003eSpeaker voice coils, headphone drivers, guitar pickups, watch coils, camera actuators, wireless-charging coils, and magnetic sensor coils use self-bonding and fine-gauge enameled wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRenewable Energy and Industry\u003c\/h3\u003e\n\u003cp\u003eWind turbine generators, solar inverters, welding equipment, induction heaters, UPS systems, and magnet assemblies depend on heavy-build, high-temperature magnet wire for long service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRange \/ Options\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eMagnet Wire \/ Enameled Copper Wire \/ Winding Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor material\u003c\/td\u003e\n\u003ctd\u003eHigh-purity copper (round, rectangular, or stranded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAWG range\u003c\/td\u003e\n\u003ctd\u003eFine gauges (50+ AWG) through heavy gauges (4–10 AWG and larger); metric diameters also available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation chemistry\u003c\/td\u003e\n\u003ctd\u003ePolyurethane (UEW), Polyester (PEW), Polyester-Imide (EIW), Polyamide-Imide (AIW), composite dual coats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal class\u003c\/td\u003e\n\u003ctd\u003e130°C \/ 155°C \/ 180°C \/ 200°C \/ 220°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation build\u003c\/td\u003e\n\u003ctd\u003eSingle, heavy, triple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercoat options\u003c\/td\u003e\n\u003ctd\u003eNylon overcoat, self-bonding overcoat, paraffin or nylon lubricant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor shape\u003c\/td\u003e\n\u003ctd\u003eRound, rectangular \/ flat, square, Litz \/ stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpool packaging\u003c\/td\u003e\n\u003ctd\u003ePlastic spools, metal reels, barrel pack; custom put-ups and continuous lengths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards compliance\u003c\/td\u003e\n\u003ctd\u003eNEMA MW 1000, IEC 60317, JIS C 3202; RoHS and REACH compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolderability\u003c\/td\u003e\n\u003ctd\u003eDirect-solderable on polyurethane types; other types require mechanical or thermal stripping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical colors\u003c\/td\u003e\n\u003ctd\u003eNatural amber\/clear; red, green, blue, and other colors available for identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"rk-note\"\u003eAWG (American Wire Gauge) is the standard sizing system used in North America. If your design uses metric diameters, we can cross-reference and supply to the equivalent AWG size.\u003c\/p\u003e\n\u003ch2\u003eValue-Added Processing Services\u003c\/h2\u003e\n\u003cp\u003eBeyond supplying raw enameled copper wire on standard spools, RapidKeen provides processing that saves time and waste on your production line.\u003c\/p\u003e\n\u003ch3\u003eCut-to-Length and Precision Spooling\u003c\/h3\u003e\n\u003cp\u003eWire can be supplied in exact continuous lengths, respooled onto your preferred spool type, or traverse-wound for tangle-free payout on high-speed winding equipment. This reduces setup time and scrap from short ends.\u003c\/p\u003e\n\u003ch3\u003eStranding, Twisting, and Bunching\u003c\/h3\u003e\n\u003cp\u003eMultiple fine magnet wires can be stranded, twisted, or bunched into Litz or multi-strand constructions to reduce high-frequency AC losses or improve flexibility for dynamic coil applications.\u003c\/p\u003e\n\u003ch3\u003eInsulation Stripping and Termination Preparation\u003c\/h3\u003e\n\u003cp\u003eFor non-solderable insulations such as polyester-imide and polyamide-imide, we can supply wire with enamel removed from cut ends using mechanical, thermal, or chemical stripping methods, ready for crimping, welding, or soldering.\u003c\/p\u003e\n\u003ch3\u003eTransposing and Formed Coils\u003c\/h3\u003e\n\u003cp\u003eFor large rectangular magnet wire used in transformers and traction motors, transposing and edge-bending services reduce circulating-current losses and produce coils that drop directly into your assembly.\u003c\/p\u003e\n\u003ch2\u003eWhy Source Magnet Wire from RapidKeen\u003c\/h2\u003e\n\u003cdiv class=\"rk-grid-2\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsistent Enamel Quality\u003c\/h3\u003e\n\u003cp\u003eMulti-pass enameling with in-line spark testing means uniform film thickness, minimal pinholes, and reliable dielectric performance spool after spool — fewer winding stoppages and field failures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eBroad AWG and Insulation Selection\u003c\/h3\u003e\n\u003cp\u003eFrom ultra-fine electronics wire to heavy-gauge motor windings, with every major enamel chemistry and build, you can consolidate enameled copper wire purchases across multiple product lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eApplication-Focused Support\u003c\/h3\u003e\n\u003cp\u003eWe help match thermal class, build, and conductor shape to your voltage, temperature, frequency, and winding method — so you don't over-specify or under-insulate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eFlexible Packaging and Processing\u003c\/h3\u003e\n\u003cp\u003eCustom put-ups, cut lengths, stranding, and stripping services align deliveries with your production schedule and reduce in-house handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire vs. Related Products\u003c\/h2\u003e\n\u003cp\u003eBuyers sometimes compare enameled copper wire with other copper wire products. The distinctions matter for correct selection:\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet Wire \/ Enameled Copper Wire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThin polymer enamel film (micrometers)\u003c\/td\u003e\n\u003ctd\u003eCoil winding: motors, transformers, inductors, solenoids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulated copper hook-up wire\u003c\/td\u003e\n\u003ctd\u003eThick PVC, silicone, or PTFE jacket\u003c\/td\u003e\n\u003ctd\u003ePoint-to-point circuit wiring, harnesses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBare copper wire\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eGrounding, bus bars, craft, jewelry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTinned copper wire\u003c\/td\u003e\n\u003ctd\u003eNone (tin plating for soldering)\u003c\/td\u003e\n\u003ctd\u003eElectrical connections, bus bars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLitz wire\u003c\/td\u003e\n\u003ctd\u003eEnamel film on each individual strand\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency coils, wireless charging, induction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between magnet wire and regular copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eMagnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eIs magnet wire the same as enameled copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eYes. \"Magnet wire\" is the standard North American term, while \"enameled copper wire,\" \"enameled wire,\" and \"winding wire\" describe the same product internationally. All refer to a copper conductor with a cured polymer film insulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eCan enameled copper wire be soldered directly?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003ePolyurethane (UEW) magnet wire is directly solderable — the enamel dissolves in molten solder at around 370–400°C without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped mechanically, thermally, or chemically before soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhich temperature class of magnet wire do I need?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelect a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155°C or 180°C; automotive and compressor windings commonly use 180°C; traction motors and high-reliability industrial drives use 200°C or 220°C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat does AWG mean for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eAWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire: 30 AWG is a fine electronics wire, while 14 AWG is a heavy motor winding wire. The gauge determines current capacity and DC resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is self-bonding magnet wire used for?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelf-bonding magnet wire has an additional adhesive overcoat that fuses turns together when heated, creating a rigid, self-supporting coil without varnish impregnation. It is widely used for speaker voice coils, sensor coils, and intricate coil shapes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhy is copper used instead of aluminum for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eCopper offers higher electrical conductivity, better thermal performance, and easier termination than aluminum. Aluminum magnet wire is sometimes chosen for large, cost-sensitive transformers because it is lighter and cheaper, but it requires a larger cross-section and special joining techniques.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between single, heavy, and triple build insulation?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eBuild refers to enamel thickness. Single build maximizes copper density for low-voltage windings; heavy build is the general-purpose standard; triple build provides extra dielectric withstand for high-voltage or inverter-fed motors exposed to voltage surges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 30px; color: #666; font-size: 14px; border-top: 1px solid #e1f0f2; padding-top: 14px;\"\u003eKeywords: magnet wire, enameled copper wire, enamel coated copper wire, insulated copper wire, winding wire, copper magnet wire, enameled wire, magnetic wire, coil winding wire, AWG magnet wire, solderable magnet wire, high temperature magnet wire, round magnet wire, flat magnet wire, polyurethane magnet wire, polyester enameled wire, polyester-imide magnet wire, polyamide-imide magnet wire, self-bonding magnet wire, motor winding wire, transformer magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Magnet Wire - Enameled Copper Wire\",\n  \"description\": \"Magnet wire (enameled copper wire) with polyurethane, polyester, polyester-imide, and polyamide-imide insulation for motors, transformers, inductors, and coil winding applications.\",\n  \"category\": \"Electrical Wire\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"RapidKeen\"},\n  \"additionalProperty\": [\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Material\", \"value\": \"Copper\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Insulation Type\", \"value\": \"Enamel polymer film\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Thermal Class\", \"value\": \"130°C - 220°C\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Shape\", \"value\": \"Round, Rectangular, Stranded\/Litz\"}\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"What is the difference between magnet wire and regular copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Magnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\"}},\n    {\"@type\": \"Question\", \"name\": \"Is magnet wire the same as enameled copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Magnet wire is the standard North American term, while enameled copper wire, enameled wire, and winding wire describe the same product internationally.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can enameled copper wire be soldered directly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Polyurethane (UEW) magnet wire is directly solderable without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped before soldering.\"}},\n    {\"@type\": \"Question\", \"name\": \"Which temperature class of magnet wire do I need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Select a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155C or 180C; automotive and compressor windings use 180C; traction motors use 200C or 220C.\"}},\n    {\"@type\": \"Question\", \"name\": \"What does AWG mean for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"AWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire and determines current capacity and DC resistance.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is self-bonding magnet wire used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Self-bonding magnet wire has an adhesive overcoat that fuses turns when heated, creating a rigid self-supporting coil without varnish, used for voice coils and sensor coils.\"}},\n    {\"@type\": \"Question\", \"name\": \"Why is copper used instead of aluminum for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Copper offers higher conductivity, better thermal performance, and easier termination. Aluminum is lighter and cheaper but needs a larger cross-section and special joining.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is the difference between single, heavy, and triple build insulation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Build refers to enamel thickness. Single build maximizes copper density, heavy build is the general-purpose standard, and triple build adds dielectric withstand for high-voltage windings.\"}}\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"RapidKeen","offers":[{"title":"42 AWG (0.06 mm) \/ 155℃ \/ Full Spool 3700 m (12139ft)","offer_id":44049278042171,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-39-awg-enameled-copper-wire-for-coil-winding","title":"Magnet Wire 39 AWG Enameled Copper Wire for Coil Winding","description":"Magnet wire — also known as enameled copper wire, winding wire, or enamel-coated copper wire — is a copper conductor covered by a thin, tough polymer film that lets thousands of turns sit side by side in a coil without short-circuiting. It is the fundamental conductor inside every motor, transformer, inductor, and electromagnetic device that converts electricity into motion, voltage, or magnetic force.\n\nWhat Is Magnet Wire?\n\nMagnet wire is an insulated electrical conductor, almost always copper (and sometimes aluminum), designed to be wound into tight coils. The term \"magnet wire\" is the standard industry name in North America and is defined by the NEMA MW 1000 standard; internationally the same product is called enameled wire or winding wire. Despite the word \"enamel,\" the insulation is not glassy porcelain or paint — it is one or more layers of high-performance polymer film applied and cured in precise passes.\n\nThe key difference between enameled copper wire and ordinary insulated copper wire is insulation thickness. A typical plastic-jacketed wire adds a millimeter or more of insulation, while magnet wire's enamel film is only a few micrometers thick. That is what allows compact, high-density coil windings where the copper fill factor — the share of cross-section actually occupied by copper — is as high as possible.\n\nThe Conductor: High-Purity Copper\n\nThe conductor is electrolytically refined or oxygen-free copper, selected for its superior electrical conductivity, thermal conductivity, and ductility. Copper's low resistance cuts energy loss and heat rise, and after annealing it becomes soft enough to draw down to very fine gauges and wind around sharp bends without work-hardening or breaking.\n\nThe Insulation: Enamel Polymer Film\n\nThe enamel coating is applied as a liquid varnish and cured at high temperature, building up a uniform, flexible, dielectric film in multiple passes. Depending on the chemistry, the insulation provides a specific balance of thermal endurance, dielectric strength, solderability, abrasion resistance, and resistance to solvents and refrigerants. Some constructions add a nylon overcoat or a self-bonding top layer for heat-activated adhesion.\n\nHow Enameled Copper Wire Works in a Coil\n\nWhen current flows through a coil of magnet wire, every turn contributes to a concentrated electromagnetic field. The enamel film forces current to follow the long helical path of the conductor instead of jumping between touching turns. The thinner and more consistent the insulation, the more copper fits into the same winding window — and the stronger, smaller, and more efficient the resulting motor, transformer, or solenoid.\n\nTypes of Enamel Insulation\n\nChoosing the right enamel chemistry is the most important decision when selecting magnet wire. Each insulation type is engineered for a different temperature range, soldering method, and operating environment.\n\nPolyurethane (UEW \/ PUR)\n\nSolderable directly at moderate temperatures without stripping the enamel — the film dissolves into the solder joint. Best for small transformers, relays, timers, clock coils, magnetic heads, and fine-wire electronics where easy termination matters.\n\nTemperature range\n\nTypically 130°C to 180°C thermal class.\n\nPolyester (PEW)\n\nThe most widely used general-purpose enamel, offering a dense, uniform film with good dielectric strength and mechanical toughness at a competitive cost. The workhorse for common motors, appliances, and general winding applications.\n\nTemperature range\n\nTypically 130°C to 155°C thermal class.\n\nPolyester-Imide (EIW)\n\nAn upgraded polyester with superior heat shock resistance, solvent resistance, and refrigerant compatibility. Common in hermetic motors, compressors, automotive alternators, and appliances exposed to high operating temperatures.\n\nTemperature range\n\nTypically 180°C thermal class.\n\nPolyamide-Imide (AIW)\n\nThe premium high-temperature enamel, with exceptional thermal endurance, abrasion resistance, and resistance to overload conditions. Often used as a topcoat over polyester-imide for the highest performance in traction motors, industrial drives, and aerospace windings.\n\nTemperature range\n\nTypically 200°C to 220°C thermal class.\n\nSelf-Bonding (Bondable)\n\nMagnet wire with a thermoplastic or thermosetting overcoat that fuses adjacent turns when heated, producing a self-supporting coil without an impregnating varnish. Ideal for voice coils, speaker coils, sensor coils, and complex free-standing windings.\n\nActivation\n\nHeat, solvent, or resistance heating.\n\nNylon-Overcoated\n\nA thin polyamide top layer added over the base enamel to improve winding lubricity, abrasion resistance, and chemical resistance. Frequently specified for high-speed automatic winding where the wire must survive tight, fast lay-down.\n\nTypical base coats\n\nPolyester or polyester-imide.\n\nMagnet Wire Forms and Shapes\n\nEnameled copper wire is supplied in several conductor geometries to match different winding techniques and slot-fill requirements.\n\nRound Enameled Copper Wire\n\nThe standard form for the majority of motor, transformer, relay, and coil applications. Round magnet wire is available across a very wide AWG range — from fine gauges under 50 AWG for precision electronics to heavy gauges above 10 AWG for large motor and transformer windings.\n\nRectangular and Flat Magnet Wire\n\nRectangular or square enameled copper wire packs more copper into a given slot than round wire, raising the fill factor and improving thermal performance. It is used in high-power traction motors, large generator coils, welding transformers, and high-current inductors where space efficiency is critical.\n\nMulti-Strand and Litz Constructions\n\nFor high-frequency applications, multiple fine enameled wires are twisted or braided together into Litz wire to reduce skin-effect and proximity-effect losses. Stranded magnet wire constructions also offer greater flexibility for bend-intensive coil designs.\n\nTemperature Class and Insulation Build\nUnderstanding Thermal Class\n\nEvery enameled copper wire carries a thermal class that indicates the maximum sustained temperature the insulation can endure over a rated service life — commonly 20,000 hours. Choosing a class with headroom above the actual operating temperature extends motor and transformer life.\n\nThermal Class\tMaximum Sustained Temperature\tTypical Enamel Chemistry\tCommon Applications\n130°C (Class B)\t130°C\tPolyurethane, Polyester\tSmall transformers, relays, general coils\n155°C (Class F)\t155°C\tPolyester, Polyurethane\tAppliance motors, fans, lighting ballasts\n180°C (Class H)\t180°C\tPolyester-Imide\tCompressors, automotive alternators, power tools\n200°C (Class N)\t200°C\tPolyamide-Imide over EIW\tTraction motors, industrial drives\n220°C (Class R)\t220°C\tPolyamide-Imide, aromatic polyimide\tAerospace, high-performance generators\nInsulation Build: Single, Heavy, and Triple\n\n\"Build\" refers to the total thickness of the enamel film. A heavier build increases dielectric withstand voltage but slightly reduces copper fill factor.\n\nSingle build — thinnest insulation; maximum copper density for low-voltage, well-supported windings.\nHeavy build — the most common choice; added dielectric margin for typical motor and transformer voltages.\nTriple build — thickest film; specified for high-voltage or surge-prone windings and for inverter-fed motors exposed to fast voltage pulses.\nHow Magnet Wire Is Made\nCopper Rod Breakdown and Wire Drawing\n\nProduction starts with a copper rod that is pulled through a series of diamond or tungsten-carbide dies, reducing its cross-section in stages until it reaches the target AWG diameter. Fine gauges may go through dozens of drawing steps.\n\nContinuous Annealing\n\nThe drawn wire is passed through a controlled-atmosphere annealing furnace to soften the copper, restore its ductility, and remove work-hardening introduced during drawing. Clean, oxide-free copper is essential for good enamel adhesion.\n\nEnamel Application and Curing\n\nLiquid enamel varnish is applied by felt or die and cured in a long, temperature-controlled oven. The wire makes multiple passes — often 6 to 12 or more — building the film layer by layer to the required build and ensuring complete coverage without pinholes.\n\nLubrication and Spooling\n\nA thin surface lubricant may be applied to help the wire feed smoothly through high-speed winding machines. The finished enameled copper wire is then spooled onto plastic or metal reels in continuous lengths.\n\nIn-Line Quality Control\n\nEvery spool is checked for continuity, insulation defects (pinholes and bare spots via high-voltage spark testing), dimensional consistency, surface finish, and adhesion. Thermal and dielectric properties are verified on sampled production lots.\n\nApplications of Enameled Copper Wire\n\nBecause roughly 90% of all electrical energy passes through a motor, transformer, or coil at some point, magnet wire is one of the most widely used conductors in the modern economy.\n\nElectric Motors and Generators\n\nIndustrial motors, EV traction motors, appliance motors, servo motors, fans, pumps, and portable generators all rely on enameled copper wire in their stator and rotor windings.\n\nTransformers and Inductors\n\nPower transformers, distribution transformers, high-frequency switch-mode transformers, toroidal inductors, chokes, and ballasts use solderable or high-temperature magnet wire depending on frequency and voltage.\n\nAutomotive Electrification\n\nAlternators, starter motors, electric power steering, ABS actuators, on-board chargers, and EV drivetrain components use high-temperature polyester-imide and polyamide-imide magnet wire.\n\nRelays, Solenoids, and Actuators\n\nFine-gauge polyurethane magnet wire is wound into relay coils, solenoid valves, contactors, and linear actuators where direct solderability and compact size matter.\n\nConsumer Electronics and Audio\n\nSpeaker voice coils, headphone drivers, guitar pickups, watch coils, camera actuators, wireless-charging coils, and magnetic sensor coils use self-bonding and fine-gauge enameled wire.\n\nRenewable Energy and Industry\n\nWind turbine generators, solar inverters, welding equipment, induction heaters, UPS systems, and magnet assemblies depend on heavy-build, high-temperature magnet wire for long service life.\n\nTechnical Specifications\nParameter\tRange \/ Options\nProduct name\tMagnet Wire \/ Enameled Copper Wire \/ Winding Wire\nConductor material\tHigh-purity copper (round, rectangular, or stranded)\nAWG range\tFine gauges (50+ AWG) through heavy gauges (4–10 AWG and larger); metric diameters also available\nInsulation chemistry\tPolyurethane (UEW), Polyester (PEW), Polyester-Imide (EIW), Polyamide-Imide (AIW), composite dual coats\nThermal class\t130°C \/ 155°C \/ 180°C \/ 200°C \/ 220°C\nInsulation build\tSingle, heavy, triple\nOvercoat options\tNylon overcoat, self-bonding overcoat, paraffin or nylon lubricant\nConductor shape\tRound, rectangular \/ flat, square, Litz \/ stranded\nSpool packaging\tPlastic spools, metal reels, barrel pack; custom put-ups and continuous lengths\nStandards compliance\tNEMA MW 1000, IEC 60317, JIS C 3202; RoHS and REACH compliant\nSolderability\tDirect-solderable on polyurethane types; other types require mechanical or thermal stripping\nTypical colors\tNatural amber\/clear; red, green, blue, and other colors available for identification\n\nAWG (American Wire Gauge) is the standard sizing system used in North America. If your design uses metric diameters, we can cross-reference and supply to the equivalent AWG size.\n\nValue-Added Processing Services\n\nBeyond supplying raw enameled copper wire on standard spools, RapidKeen provides processing that saves time and waste on your production line.\n\nCut-to-Length and Precision Spooling\n\nWire can be supplied in exact continuous lengths, respooled onto your preferred spool type, or traverse-wound for tangle-free payout on high-speed winding equipment. This reduces setup time and scrap from short ends.\n\nStranding, Twisting, and Bunching\n\nMultiple fine magnet wires can be stranded, twisted, or bunched into Litz or multi-strand constructions to reduce high-frequency AC losses or improve flexibility for dynamic coil applications.\n\nInsulation Stripping and Termination Preparation\n\nFor non-solderable insulations such as polyester-imide and polyamide-imide, we can supply wire with enamel removed from cut ends using mechanical, thermal, or chemical stripping methods, ready for crimping, welding, or soldering.\n\nTransposing and Formed Coils\n\nFor large rectangular magnet wire used in transformers and traction motors, transposing and edge-bending services reduce circulating-current losses and produce coils that drop directly into your assembly.\n\nWhy Source Magnet Wire from RapidKeen\nConsistent Enamel Quality\n\nMulti-pass enameling with in-line spark testing means uniform film thickness, minimal pinholes, and reliable dielectric performance spool after spool — fewer winding stoppages and field failures.\n\nBroad AWG and Insulation Selection\n\nFrom ultra-fine electronics wire to heavy-gauge motor windings, with every major enamel chemistry and build, you can consolidate enameled copper wire purchases across multiple product lines.\n\nApplication-Focused Support\n\nWe help match thermal class, build, and conductor shape to your voltage, temperature, frequency, and winding method — so you don't over-specify or under-insulate.\n\nFlexible Packaging and Processing\n\nCustom put-ups, cut lengths, stranding, and stripping services align deliveries with your production schedule and reduce in-house handling.\n\nMagnet Wire vs. Related Products\n\nBuyers sometimes compare enameled copper wire with other copper wire products. The distinctions matter for correct selection:\n\nProduct\tInsulation\tTypical Use\nMagnet Wire \/ Enameled Copper Wire\tThin polymer enamel film (micrometers)\tCoil winding: motors, transformers, inductors, solenoids\nInsulated copper hook-up wire\tThick PVC, silicone, or PTFE jacket\tPoint-to-point circuit wiring, harnesses\nBare copper wire\tNone\tGrounding, bus bars, craft, jewelry\nTinned copper wire\tNone (tin plating for soldering)\tElectrical connections, bus bars\nLitz wire\tEnamel film on each individual strand\tHigh-frequency coils, wireless charging, induction\nFrequently Asked Questions\nWhat is the difference between magnet wire and regular copper wire?\n\nMagnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\n\nIs magnet wire the same as enameled copper wire?\n\nYes. \"Magnet wire\" is the standard North American term, while \"enameled copper wire,\" \"enameled wire,\" and \"winding wire\" describe the same product internationally. All refer to a copper conductor with a cured polymer film insulation.\n\nCan enameled copper wire be soldered directly?\n\nPolyurethane (UEW) magnet wire is directly solderable — the enamel dissolves in molten solder at around 370–400°C without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped mechanically, thermally, or chemically before soldering.\n\nWhich temperature class of magnet wire do I need?\n\nSelect a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155°C or 180°C; automotive and compressor windings commonly use 180°C; traction motors and high-reliability industrial drives use 200°C or 220°C.\n\nWhat does AWG mean for magnet wire?\n\nAWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire: 30 AWG is a fine electronics wire, while 14 AWG is a heavy motor winding wire. The gauge determines current capacity and DC resistance.\n\nWhat is self-bonding magnet wire used for?\n\nSelf-bonding magnet wire has an additional adhesive overcoat that fuses turns together when heated, creating a rigid, self-supporting coil without varnish impregnation. It is widely used for speaker voice coils, sensor coils, and intricate coil shapes.\n\nWhy is copper used instead of aluminum for magnet wire?\n\nCopper offers higher electrical conductivity, better thermal performance, and easier termination than aluminum. Aluminum magnet wire is sometimes chosen for large, cost-sensitive transformers because it is lighter and cheaper, but it requires a larger cross-section and special joining techniques.\n\nWhat is the difference between single, heavy, and triple build insulation?\n\nBuild refers to enamel thickness. Single build maximizes copper density for low-voltage windings; heavy build is the general-purpose standard; triple build provides extra dielectric withstand for high-voltage or inverter-fed motors exposed to voltage surges.\n\nKeywords: magnet wire, enameled copper wire, enamel coated copper wire, insulated copper wire, winding wire, copper magnet wire, enameled wire, magnetic wire, coil winding wire, AWG magnet wire, solderable magnet wire, high temperature magnet wire, round magnet wire, flat magnet wire, polyurethane magnet wire, polyester enameled wire, polyester-imide magnet wire, polyamide-imide magnet wire, self-bonding magnet wire, motor winding wire, transformer magnet wire.","brand":"RapidKeen","offers":[{"title":"39 AWG (0.09 mm) \/ 155°C \/ Full Spool 2000 m (6562ft)","offer_id":44049281744955,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-36-awg-enameled-copper-wire-for-coil-winding","title":"Magnet Wire 36 AWG 0.12mm Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 16px;padding-bottom:10px;border-bottom:3px solid #00AAFF;line-height:1.35}\n.rk-mw h3{font-size:20px;color:#005969;margin:28px 0 10px;line-height:1.4}\n.rk-mw h4{font-size:17px;color:#0a7a8c;margin:20px 0 8px}\n.rk-mw h5{font-size:15px;color:#333;margin:16px 0 6px}\n.rk-mw h6{font-size:14px;color:#555;margin:14px 0 6px;text-transform:uppercase;letter-spacing:.5px}\n.rk-mw p{margin:0 0 14px}\n.rk-mw ul,.rk-mw ol{margin:0 0 16px;padding-left:22px}\n.rk-mw li{margin-bottom:6px}\n.rk-mw a{color:#0078a8;text-decoration:none}\n.rk-mw a:hover{text-decoration:underline}\n.rk-mw .rk-lead{font-size:17px;color:#333;background:#f3fafb;border-left:4px solid #00AAFF;padding:16px 20px;border-radius:0 8px 8px 0;margin:0 0 24px}\n.rk-mw .rk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-card{background:#fafdfe;border:1px solid #e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3,.rk-mw .rk-card h4{margin-top:0}\n.rk-mw .rk-table-wrap{overflow-x:auto;margin:16px 0 24px;-webkit-overflow-scrolling:touch}\n.rk-mw table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}\n.rk-mw th{background:#005969;color:#fff;text-align:left;padding:12px 14px;font-weight:600;white-space:nowrap}\n.rk-mw td{padding:11px 14px;border-bottom:1px solid #e6eef0;vertical-align:top}\n.rk-mw tr:nth-child(even) td{background:#f6fbfc}\n.rk-mw .rk-note{background:#fff8e6;border-left:4px solid #f5b301;padding:14px 18px;border-radius:0 8px 8px 0;margin:16px 0;font-size:15px}\n.rk-mw .rk-kw{font-weight:600;color:#005969}\n.rk-mw .rk-process{counter-reset:step;list-style:none;padding-left:0}\n.rk-mw .rk-process li{position:relative;padding:0 0 18px 48px;border-left:2px solid #b3e5fc;margin-left:16px}\n.rk-mw .rk-process li::before{counter-increment:step;content:counter(step);position:absolute;left:-17px;top:0;width:32px;height:32px;background:#00AAFF;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}\n.rk-mw .rk-process li:last-child{border-left:2px solid transparent;padding-bottom:0}\n.rk-mw .rk-process h4{margin:4px 0 6px}\n.rk-mw .rk-faq{border:1px solid #e1f0f2;border-radius:10px;margin-bottom:12px;overflow:hidden}\n.rk-mw .rk-faq h3{margin:0;padding:16px 20px;background:#f3fafb;font-size:17px}\n.rk-mw .rk-faq h3::before{content:\"Q \";color:#00AAFF;font-weight:700}\n.rk-mw .rk-faq .rk-a{padding:0 20px 16px}\n@media(max-width:900px){.rk-mw .rk-grid{grid-template-columns:repeat(2,1fr)}}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid,.rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n  .rk-mw table{font-size:14px}\n  .rk-mw th,.rk-mw td{padding:9px 10px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\u003cp class=\"rk-lead\"\u003e\u003cspan class=\"rk-kw\"\u003eMagnet wire\u003c\/span\u003e — also known as \u003cspan class=\"rk-kw\"\u003eenameled copper wire\u003c\/span\u003e, winding wire, or enamel-coated copper wire — is a copper conductor covered by a thin, tough polymer film that lets thousands of turns sit side by side in a coil without short-circuiting. It is the fundamental conductor inside every motor, transformer, inductor, and electromagnetic device that converts electricity into motion, voltage, or magnetic force.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e is an insulated electrical conductor, almost always copper (and sometimes aluminum), designed to be wound into tight coils. The term \"magnet wire\" is the standard industry name in North America and is defined by the NEMA MW 1000 standard; internationally the same product is called \u003cstrong\u003eenameled wire\u003c\/strong\u003e or \u003cstrong\u003ewinding wire\u003c\/strong\u003e. Despite the word \"enamel,\" the insulation is not glassy porcelain or paint — it is one or more layers of high-performance polymer film applied and cured in precise passes.\u003c\/p\u003e\n\u003cp\u003eThe key difference between \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e and ordinary insulated copper wire is insulation thickness. A typical plastic-jacketed wire adds a millimeter or more of insulation, while magnet wire's enamel film is only a few micrometers thick. That is what allows compact, high-density coil windings where the copper fill factor — the share of cross-section actually occupied by copper — is as high as possible.\u003c\/p\u003e\n\u003ch3\u003eThe Conductor: High-Purity Copper\u003c\/h3\u003e\n\u003cp\u003eThe conductor is electrolytically refined or oxygen-free copper, selected for its superior electrical conductivity, thermal conductivity, and ductility. Copper's low resistance cuts energy loss and heat rise, and after annealing it becomes soft enough to draw down to very fine gauges and wind around sharp bends without work-hardening or breaking.\u003c\/p\u003e\n\u003ch3\u003eThe Insulation: Enamel Polymer Film\u003c\/h3\u003e\n\u003cp\u003eThe enamel coating is applied as a liquid varnish and cured at high temperature, building up a uniform, flexible, dielectric film in multiple passes. Depending on the chemistry, the insulation provides a specific balance of thermal endurance, dielectric strength, solderability, abrasion resistance, and resistance to solvents and refrigerants. Some constructions add a nylon overcoat or a self-bonding top layer for heat-activated adhesion.\u003c\/p\u003e\n\u003ch3\u003eHow Enameled Copper Wire Works in a Coil\u003c\/h3\u003e\n\u003cp\u003eWhen current flows through a coil of magnet wire, every turn contributes to a concentrated electromagnetic field. The enamel film forces current to follow the long helical path of the conductor instead of jumping between touching turns. The thinner and more consistent the insulation, the more copper fits into the same winding window — and the stronger, smaller, and more efficient the resulting motor, transformer, or solenoid.\u003c\/p\u003e\n\u003ch2\u003eTypes of Enamel Insulation\u003c\/h2\u003e\n\u003cp\u003eChoosing the right enamel chemistry is the most important decision when selecting magnet wire. Each insulation type is engineered for a different temperature range, soldering method, and operating environment.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyurethane (UEW \/ PUR)\u003c\/h3\u003e\n\u003cp\u003eSolderable directly at moderate temperatures without stripping the enamel — the film dissolves into the solder joint. Best for small transformers, relays, timers, clock coils, magnetic heads, and fine-wire electronics where easy termination matters.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester (PEW)\u003c\/h3\u003e\n\u003cp\u003eThe most widely used general-purpose enamel, offering a dense, uniform film with good dielectric strength and mechanical toughness at a competitive cost. The workhorse for common motors, appliances, and general winding applications.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 155°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester-Imide (EIW)\u003c\/h3\u003e\n\u003cp\u003eAn upgraded polyester with superior heat shock resistance, solvent resistance, and refrigerant compatibility. Common in hermetic motors, compressors, automotive alternators, and appliances exposed to high operating temperatures.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyamide-Imide (AIW)\u003c\/h3\u003e\n\u003cp\u003eThe premium high-temperature enamel, with exceptional thermal endurance, abrasion resistance, and resistance to overload conditions. Often used as a topcoat over polyester-imide for the highest performance in traction motors, industrial drives, and aerospace windings.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 200°C to 220°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eSelf-Bonding (Bondable)\u003c\/h3\u003e\n\u003cp\u003eMagnet wire with a thermoplastic or thermosetting overcoat that fuses adjacent turns when heated, producing a self-supporting coil without an impregnating varnish. Ideal for voice coils, speaker coils, sensor coils, and complex free-standing windings.\u003c\/p\u003e\n\u003ch4\u003eActivation\u003c\/h4\u003e\n\u003cp\u003eHeat, solvent, or resistance heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eNylon-Overcoated\u003c\/h3\u003e\n\u003cp\u003eA thin polyamide top layer added over the base enamel to improve winding lubricity, abrasion resistance, and chemical resistance. Frequently specified for high-speed automatic winding where the wire must survive tight, fast lay-down.\u003c\/p\u003e\n\u003ch4\u003eTypical base coats\u003c\/h4\u003e\n\u003cp\u003ePolyester or polyester-imide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire Forms and Shapes\u003c\/h2\u003e\n\u003cp\u003eEnameled copper wire is supplied in several conductor geometries to match different winding techniques and slot-fill requirements.\u003c\/p\u003e\n\u003ch3\u003eRound Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eThe standard form for the majority of motor, transformer, relay, and coil applications. Round magnet wire is available across a very wide AWG range — from fine gauges under 50 AWG for precision electronics to heavy gauges above 10 AWG for large motor and transformer windings.\u003c\/p\u003e\n\u003ch3\u003eRectangular and Flat Magnet Wire\u003c\/h3\u003e\n\u003cp\u003eRectangular or square enameled copper wire packs more copper into a given slot than round wire, raising the fill factor and improving thermal performance. It is used in high-power traction motors, large generator coils, welding transformers, and high-current inductors where space efficiency is critical.\u003c\/p\u003e\n\u003ch3\u003eMulti-Strand and Litz Constructions\u003c\/h3\u003e\n\u003cp\u003eFor high-frequency applications, multiple fine enameled wires are twisted or braided together into \u003cstrong\u003eLitz wire\u003c\/strong\u003e to reduce skin-effect and proximity-effect losses. Stranded magnet wire constructions also offer greater flexibility for bend-intensive coil designs.\u003c\/p\u003e\n\u003ch2\u003eTemperature Class and Insulation Build\u003c\/h2\u003e\n\u003ch3\u003eUnderstanding Thermal Class\u003c\/h3\u003e\n\u003cp\u003eEvery enameled copper wire carries a thermal class that indicates the maximum sustained temperature the insulation can endure over a rated service life — commonly 20,000 hours. Choosing a class with headroom above the actual operating temperature extends motor and transformer life.\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Class\u003c\/th\u003e\n\u003cth\u003eMaximum Sustained Temperature\u003c\/th\u003e\n\u003cth\u003eTypical Enamel Chemistry\u003c\/th\u003e\n\u003cth\u003eCommon Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e130°C (Class B)\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003ctd\u003ePolyurethane, Polyester\u003c\/td\u003e\n\u003ctd\u003eSmall transformers, relays, general coils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e155°C (Class F)\u003c\/td\u003e\n\u003ctd\u003e155°C\u003c\/td\u003e\n\u003ctd\u003ePolyester, Polyurethane\u003c\/td\u003e\n\u003ctd\u003eAppliance motors, fans, lighting ballasts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e180°C (Class H)\u003c\/td\u003e\n\u003ctd\u003e180°C\u003c\/td\u003e\n\u003ctd\u003ePolyester-Imide\u003c\/td\u003e\n\u003ctd\u003eCompressors, automotive alternators, power tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200°C (Class N)\u003c\/td\u003e\n\u003ctd\u003e200°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide over EIW\u003c\/td\u003e\n\u003ctd\u003eTraction motors, industrial drives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e220°C (Class R)\u003c\/td\u003e\n\u003ctd\u003e220°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide, aromatic polyimide\u003c\/td\u003e\n\u003ctd\u003eAerospace, high-performance generators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eInsulation Build: Single, Heavy, and Triple\u003c\/h3\u003e\n\u003cp\u003e\"Build\" refers to the total thickness of the enamel film. A heavier build increases dielectric withstand voltage but slightly reduces copper fill factor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle build\u003c\/strong\u003e — thinnest insulation; maximum copper density for low-voltage, well-supported windings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy build\u003c\/strong\u003e — the most common choice; added dielectric margin for typical motor and transformer voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple build\u003c\/strong\u003e — thickest film; specified for high-voltage or surge-prone windings and for inverter-fed motors exposed to fast voltage pulses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow Magnet Wire Is Made\u003c\/h2\u003e\n\u003col class=\"rk-process\"\u003e\n\u003cli\u003e\n\u003ch4\u003eCopper Rod Breakdown and Wire Drawing\u003c\/h4\u003e\n\u003cp\u003eProduction starts with a copper rod that is pulled through a series of diamond or tungsten-carbide dies, reducing its cross-section in stages until it reaches the target AWG diameter. Fine gauges may go through dozens of drawing steps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eContinuous Annealing\u003c\/h4\u003e\n\u003cp\u003eThe drawn wire is passed through a controlled-atmosphere annealing furnace to soften the copper, restore its ductility, and remove work-hardening introduced during drawing. Clean, oxide-free copper is essential for good enamel adhesion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eEnamel Application and Curing\u003c\/h4\u003e\n\u003cp\u003eLiquid enamel varnish is applied by felt or die and cured in a long, temperature-controlled oven. The wire makes multiple passes — often 6 to 12 or more — building the film layer by layer to the required build and ensuring complete coverage without pinholes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eLubrication and Spooling\u003c\/h4\u003e\n\u003cp\u003eA thin surface lubricant may be applied to help the wire feed smoothly through high-speed winding machines. The finished enameled copper wire is then spooled onto plastic or metal reels in continuous lengths.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eIn-Line Quality Control\u003c\/h4\u003e\n\u003cp\u003eEvery spool is checked for continuity, insulation defects (pinholes and bare spots via high-voltage spark testing), dimensional consistency, surface finish, and adhesion. Thermal and dielectric properties are verified on sampled production lots.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eApplications of Enameled Copper Wire\u003c\/h2\u003e\n\u003cp\u003eBecause roughly 90% of all electrical energy passes through a motor, transformer, or coil at some point, magnet wire is one of the most widely used conductors in the modern economy.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eElectric Motors and Generators\u003c\/h3\u003e\n\u003cp\u003eIndustrial motors, EV traction motors, appliance motors, servo motors, fans, pumps, and portable generators all rely on enameled copper wire in their stator and rotor windings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eTransformers and Inductors\u003c\/h3\u003e\n\u003cp\u003ePower transformers, distribution transformers, high-frequency switch-mode transformers, toroidal inductors, chokes, and ballasts use solderable or high-temperature magnet wire depending on frequency and voltage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eAutomotive Electrification\u003c\/h3\u003e\n\u003cp\u003eAlternators, starter motors, electric power steering, ABS actuators, on-board chargers, and EV drivetrain components use high-temperature polyester-imide and polyamide-imide magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRelays, Solenoids, and Actuators\u003c\/h3\u003e\n\u003cp\u003eFine-gauge polyurethane magnet wire is wound into relay coils, solenoid valves, contactors, and linear actuators where direct solderability and compact size matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsumer Electronics and Audio\u003c\/h3\u003e\n\u003cp\u003eSpeaker voice coils, headphone drivers, guitar pickups, watch coils, camera actuators, wireless-charging coils, and magnetic sensor coils use self-bonding and fine-gauge enameled wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRenewable Energy and Industry\u003c\/h3\u003e\n\u003cp\u003eWind turbine generators, solar inverters, welding equipment, induction heaters, UPS systems, and magnet assemblies depend on heavy-build, high-temperature magnet wire for long service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRange \/ Options\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eMagnet Wire \/ Enameled Copper Wire \/ Winding Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor material\u003c\/td\u003e\n\u003ctd\u003eHigh-purity copper (round, rectangular, or stranded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAWG range\u003c\/td\u003e\n\u003ctd\u003eFine gauges (50+ AWG) through heavy gauges (4–10 AWG and larger); metric diameters also available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation chemistry\u003c\/td\u003e\n\u003ctd\u003ePolyurethane (UEW), Polyester (PEW), Polyester-Imide (EIW), Polyamide-Imide (AIW), composite dual coats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal class\u003c\/td\u003e\n\u003ctd\u003e130°C \/ 155°C \/ 180°C \/ 200°C \/ 220°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation build\u003c\/td\u003e\n\u003ctd\u003eSingle, heavy, triple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercoat options\u003c\/td\u003e\n\u003ctd\u003eNylon overcoat, self-bonding overcoat, paraffin or nylon lubricant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor shape\u003c\/td\u003e\n\u003ctd\u003eRound, rectangular \/ flat, square, Litz \/ stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpool packaging\u003c\/td\u003e\n\u003ctd\u003ePlastic spools, metal reels, barrel pack; custom put-ups and continuous lengths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards compliance\u003c\/td\u003e\n\u003ctd\u003eNEMA MW 1000, IEC 60317, JIS C 3202; RoHS and REACH compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolderability\u003c\/td\u003e\n\u003ctd\u003eDirect-solderable on polyurethane types; other types require mechanical or thermal stripping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical colors\u003c\/td\u003e\n\u003ctd\u003eNatural amber\/clear; red, green, blue, and other colors available for identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"rk-note\"\u003eAWG (American Wire Gauge) is the standard sizing system used in North America. If your design uses metric diameters, we can cross-reference and supply to the equivalent AWG size.\u003c\/p\u003e\n\u003ch2\u003eValue-Added Processing Services\u003c\/h2\u003e\n\u003cp\u003eBeyond supplying raw enameled copper wire on standard spools, RapidKeen provides processing that saves time and waste on your production line.\u003c\/p\u003e\n\u003ch3\u003eCut-to-Length and Precision Spooling\u003c\/h3\u003e\n\u003cp\u003eWire can be supplied in exact continuous lengths, respooled onto your preferred spool type, or traverse-wound for tangle-free payout on high-speed winding equipment. This reduces setup time and scrap from short ends.\u003c\/p\u003e\n\u003ch3\u003eStranding, Twisting, and Bunching\u003c\/h3\u003e\n\u003cp\u003eMultiple fine magnet wires can be stranded, twisted, or bunched into Litz or multi-strand constructions to reduce high-frequency AC losses or improve flexibility for dynamic coil applications.\u003c\/p\u003e\n\u003ch3\u003eInsulation Stripping and Termination Preparation\u003c\/h3\u003e\n\u003cp\u003eFor non-solderable insulations such as polyester-imide and polyamide-imide, we can supply wire with enamel removed from cut ends using mechanical, thermal, or chemical stripping methods, ready for crimping, welding, or soldering.\u003c\/p\u003e\n\u003ch3\u003eTransposing and Formed Coils\u003c\/h3\u003e\n\u003cp\u003eFor large rectangular magnet wire used in transformers and traction motors, transposing and edge-bending services reduce circulating-current losses and produce coils that drop directly into your assembly.\u003c\/p\u003e\n\u003ch2\u003eWhy Source Magnet Wire from RapidKeen\u003c\/h2\u003e\n\u003cdiv class=\"rk-grid-2\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsistent Enamel Quality\u003c\/h3\u003e\n\u003cp\u003eMulti-pass enameling with in-line spark testing means uniform film thickness, minimal pinholes, and reliable dielectric performance spool after spool — fewer winding stoppages and field failures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eBroad AWG and Insulation Selection\u003c\/h3\u003e\n\u003cp\u003eFrom ultra-fine electronics wire to heavy-gauge motor windings, with every major enamel chemistry and build, you can consolidate enameled copper wire purchases across multiple product lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eApplication-Focused Support\u003c\/h3\u003e\n\u003cp\u003eWe help match thermal class, build, and conductor shape to your voltage, temperature, frequency, and winding method — so you don't over-specify or under-insulate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eFlexible Packaging and Processing\u003c\/h3\u003e\n\u003cp\u003eCustom put-ups, cut lengths, stranding, and stripping services align deliveries with your production schedule and reduce in-house handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire vs. Related Products\u003c\/h2\u003e\n\u003cp\u003eBuyers sometimes compare enameled copper wire with other copper wire products. The distinctions matter for correct selection:\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet Wire \/ Enameled Copper Wire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThin polymer enamel film (micrometers)\u003c\/td\u003e\n\u003ctd\u003eCoil winding: motors, transformers, inductors, solenoids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulated copper hook-up wire\u003c\/td\u003e\n\u003ctd\u003eThick PVC, silicone, or PTFE jacket\u003c\/td\u003e\n\u003ctd\u003ePoint-to-point circuit wiring, harnesses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBare copper wire\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eGrounding, bus bars, craft, jewelry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTinned copper wire\u003c\/td\u003e\n\u003ctd\u003eNone (tin plating for soldering)\u003c\/td\u003e\n\u003ctd\u003eElectrical connections, bus bars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLitz wire\u003c\/td\u003e\n\u003ctd\u003eEnamel film on each individual strand\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency coils, wireless charging, induction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between magnet wire and regular copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eMagnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eIs magnet wire the same as enameled copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eYes. \"Magnet wire\" is the standard North American term, while \"enameled copper wire,\" \"enameled wire,\" and \"winding wire\" describe the same product internationally. All refer to a copper conductor with a cured polymer film insulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eCan enameled copper wire be soldered directly?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003ePolyurethane (UEW) magnet wire is directly solderable — the enamel dissolves in molten solder at around 370–400°C without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped mechanically, thermally, or chemically before soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhich temperature class of magnet wire do I need?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelect a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155°C or 180°C; automotive and compressor windings commonly use 180°C; traction motors and high-reliability industrial drives use 200°C or 220°C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat does AWG mean for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eAWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire: 30 AWG is a fine electronics wire, while 14 AWG is a heavy motor winding wire. The gauge determines current capacity and DC resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is self-bonding magnet wire used for?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelf-bonding magnet wire has an additional adhesive overcoat that fuses turns together when heated, creating a rigid, self-supporting coil without varnish impregnation. It is widely used for speaker voice coils, sensor coils, and intricate coil shapes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhy is copper used instead of aluminum for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eCopper offers higher electrical conductivity, better thermal performance, and easier termination than aluminum. Aluminum magnet wire is sometimes chosen for large, cost-sensitive transformers because it is lighter and cheaper, but it requires a larger cross-section and special joining techniques.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between single, heavy, and triple build insulation?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eBuild refers to enamel thickness. Single build maximizes copper density for low-voltage windings; heavy build is the general-purpose standard; triple build provides extra dielectric withstand for high-voltage or inverter-fed motors exposed to voltage surges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 30px; color: #666; font-size: 14px; border-top: 1px solid #e1f0f2; padding-top: 14px;\"\u003eKeywords: magnet wire, enameled copper wire, enamel coated copper wire, insulated copper wire, winding wire, copper magnet wire, enameled wire, magnetic wire, coil winding wire, AWG magnet wire, solderable magnet wire, high temperature magnet wire, round magnet wire, flat magnet wire, polyurethane magnet wire, polyester enameled wire, polyester-imide magnet wire, polyamide-imide magnet wire, self-bonding magnet wire, motor winding wire, transformer magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Magnet Wire - Enameled Copper Wire\",\n  \"description\": \"Magnet wire (enameled copper wire) with polyurethane, polyester, polyester-imide, and polyamide-imide insulation for motors, transformers, inductors, and coil winding applications.\",\n  \"category\": \"Electrical Wire\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"RapidKeen\"},\n  \"additionalProperty\": [\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Material\", \"value\": \"Copper\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Insulation Type\", \"value\": \"Enamel polymer film\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Thermal Class\", \"value\": \"130°C - 220°C\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Shape\", \"value\": \"Round, Rectangular, Stranded\/Litz\"}\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"What is the difference between magnet wire and regular copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Magnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\"}},\n    {\"@type\": \"Question\", \"name\": \"Is magnet wire the same as enameled copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Magnet wire is the standard North American term, while enameled copper wire, enameled wire, and winding wire describe the same product internationally.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can enameled copper wire be soldered directly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Polyurethane (UEW) magnet wire is directly solderable without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped before soldering.\"}},\n    {\"@type\": \"Question\", \"name\": \"Which temperature class of magnet wire do I need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Select a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155C or 180C; automotive and compressor windings use 180C; traction motors use 200C or 220C.\"}},\n    {\"@type\": \"Question\", \"name\": \"What does AWG mean for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"AWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire and determines current capacity and DC resistance.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is self-bonding magnet wire used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Self-bonding magnet wire has an adhesive overcoat that fuses turns when heated, creating a rigid self-supporting coil without varnish, used for voice coils and sensor coils.\"}},\n    {\"@type\": \"Question\", \"name\": \"Why is copper used instead of aluminum for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Copper offers higher conductivity, better thermal performance, and easier termination. Aluminum is lighter and cheaper but needs a larger cross-section and special joining.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is the difference between single, heavy, and triple build insulation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Build refers to enamel thickness. Single build maximizes copper density, heavy build is the general-purpose standard, and triple build adds dielectric withstand for high-voltage windings.\"}}\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"RapidKeen","offers":[{"title":"36 AWG (0.12 mm) \/ 155°C \/ Full Spool 1400 m (4593ft)","offer_id":44049289674811,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-36-awg-0-12mm-enameled-copper-wire-for-coil-winding-1","title":"Magnet Wire 36 AWG 0.13mm Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 16px;padding-bottom:10px;border-bottom:3px solid #00AAFF;line-height:1.35}\n.rk-mw h3{font-size:20px;color:#005969;margin:28px 0 10px;line-height:1.4}\n.rk-mw h4{font-size:17px;color:#0a7a8c;margin:20px 0 8px}\n.rk-mw h5{font-size:15px;color:#333;margin:16px 0 6px}\n.rk-mw h6{font-size:14px;color:#555;margin:14px 0 6px;text-transform:uppercase;letter-spacing:.5px}\n.rk-mw p{margin:0 0 14px}\n.rk-mw ul,.rk-mw ol{margin:0 0 16px;padding-left:22px}\n.rk-mw li{margin-bottom:6px}\n.rk-mw a{color:#0078a8;text-decoration:none}\n.rk-mw a:hover{text-decoration:underline}\n.rk-mw .rk-lead{font-size:17px;color:#333;background:#f3fafb;border-left:4px solid #00AAFF;padding:16px 20px;border-radius:0 8px 8px 0;margin:0 0 24px}\n.rk-mw .rk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-card{background:#fafdfe;border:1px solid #e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3,.rk-mw .rk-card h4{margin-top:0}\n.rk-mw .rk-table-wrap{overflow-x:auto;margin:16px 0 24px;-webkit-overflow-scrolling:touch}\n.rk-mw table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}\n.rk-mw th{background:#005969;color:#fff;text-align:left;padding:12px 14px;font-weight:600;white-space:nowrap}\n.rk-mw td{padding:11px 14px;border-bottom:1px solid #e6eef0;vertical-align:top}\n.rk-mw tr:nth-child(even) td{background:#f6fbfc}\n.rk-mw .rk-note{background:#fff8e6;border-left:4px solid #f5b301;padding:14px 18px;border-radius:0 8px 8px 0;margin:16px 0;font-size:15px}\n.rk-mw .rk-kw{font-weight:600;color:#005969}\n.rk-mw .rk-process{counter-reset:step;list-style:none;padding-left:0}\n.rk-mw .rk-process li{position:relative;padding:0 0 18px 48px;border-left:2px solid #b3e5fc;margin-left:16px}\n.rk-mw .rk-process li::before{counter-increment:step;content:counter(step);position:absolute;left:-17px;top:0;width:32px;height:32px;background:#00AAFF;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}\n.rk-mw .rk-process li:last-child{border-left:2px solid transparent;padding-bottom:0}\n.rk-mw .rk-process h4{margin:4px 0 6px}\n.rk-mw .rk-faq{border:1px solid #e1f0f2;border-radius:10px;margin-bottom:12px;overflow:hidden}\n.rk-mw .rk-faq h3{margin:0;padding:16px 20px;background:#f3fafb;font-size:17px}\n.rk-mw .rk-faq h3::before{content:\"Q \";color:#00AAFF;font-weight:700}\n.rk-mw .rk-faq .rk-a{padding:0 20px 16px}\n@media(max-width:900px){.rk-mw .rk-grid{grid-template-columns:repeat(2,1fr)}}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid,.rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n  .rk-mw table{font-size:14px}\n  .rk-mw th,.rk-mw td{padding:9px 10px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\u003cp class=\"rk-lead\"\u003e\u003cspan class=\"rk-kw\"\u003eMagnet wire\u003c\/span\u003e — also known as \u003cspan class=\"rk-kw\"\u003eenameled copper wire\u003c\/span\u003e, winding wire, or enamel-coated copper wire — is a copper conductor covered by a thin, tough polymer film that lets thousands of turns sit side by side in a coil without short-circuiting. It is the fundamental conductor inside every motor, transformer, inductor, and electromagnetic device that converts electricity into motion, voltage, or magnetic force.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e is an insulated electrical conductor, almost always copper (and sometimes aluminum), designed to be wound into tight coils. The term \"magnet wire\" is the standard industry name in North America and is defined by the NEMA MW 1000 standard; internationally the same product is called \u003cstrong\u003eenameled wire\u003c\/strong\u003e or \u003cstrong\u003ewinding wire\u003c\/strong\u003e. Despite the word \"enamel,\" the insulation is not glassy porcelain or paint — it is one or more layers of high-performance polymer film applied and cured in precise passes.\u003c\/p\u003e\n\u003cp\u003eThe key difference between \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e and ordinary insulated copper wire is insulation thickness. A typical plastic-jacketed wire adds a millimeter or more of insulation, while magnet wire's enamel film is only a few micrometers thick. That is what allows compact, high-density coil windings where the copper fill factor — the share of cross-section actually occupied by copper — is as high as possible.\u003c\/p\u003e\n\u003ch3\u003eThe Conductor: High-Purity Copper\u003c\/h3\u003e\n\u003cp\u003eThe conductor is electrolytically refined or oxygen-free copper, selected for its superior electrical conductivity, thermal conductivity, and ductility. Copper's low resistance cuts energy loss and heat rise, and after annealing it becomes soft enough to draw down to very fine gauges and wind around sharp bends without work-hardening or breaking.\u003c\/p\u003e\n\u003ch3\u003eThe Insulation: Enamel Polymer Film\u003c\/h3\u003e\n\u003cp\u003eThe enamel coating is applied as a liquid varnish and cured at high temperature, building up a uniform, flexible, dielectric film in multiple passes. Depending on the chemistry, the insulation provides a specific balance of thermal endurance, dielectric strength, solderability, abrasion resistance, and resistance to solvents and refrigerants. Some constructions add a nylon overcoat or a self-bonding top layer for heat-activated adhesion.\u003c\/p\u003e\n\u003ch3\u003eHow Enameled Copper Wire Works in a Coil\u003c\/h3\u003e\n\u003cp\u003eWhen current flows through a coil of magnet wire, every turn contributes to a concentrated electromagnetic field. The enamel film forces current to follow the long helical path of the conductor instead of jumping between touching turns. The thinner and more consistent the insulation, the more copper fits into the same winding window — and the stronger, smaller, and more efficient the resulting motor, transformer, or solenoid.\u003c\/p\u003e\n\u003ch2\u003eTypes of Enamel Insulation\u003c\/h2\u003e\n\u003cp\u003eChoosing the right enamel chemistry is the most important decision when selecting magnet wire. Each insulation type is engineered for a different temperature range, soldering method, and operating environment.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyurethane (UEW \/ PUR)\u003c\/h3\u003e\n\u003cp\u003eSolderable directly at moderate temperatures without stripping the enamel — the film dissolves into the solder joint. Best for small transformers, relays, timers, clock coils, magnetic heads, and fine-wire electronics where easy termination matters.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester (PEW)\u003c\/h3\u003e\n\u003cp\u003eThe most widely used general-purpose enamel, offering a dense, uniform film with good dielectric strength and mechanical toughness at a competitive cost. The workhorse for common motors, appliances, and general winding applications.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 130°C to 155°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyester-Imide (EIW)\u003c\/h3\u003e\n\u003cp\u003eAn upgraded polyester with superior heat shock resistance, solvent resistance, and refrigerant compatibility. Common in hermetic motors, compressors, automotive alternators, and appliances exposed to high operating temperatures.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 180°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003ePolyamide-Imide (AIW)\u003c\/h3\u003e\n\u003cp\u003eThe premium high-temperature enamel, with exceptional thermal endurance, abrasion resistance, and resistance to overload conditions. Often used as a topcoat over polyester-imide for the highest performance in traction motors, industrial drives, and aerospace windings.\u003c\/p\u003e\n\u003ch4\u003eTemperature range\u003c\/h4\u003e\n\u003cp\u003eTypically 200°C to 220°C thermal class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eSelf-Bonding (Bondable)\u003c\/h3\u003e\n\u003cp\u003eMagnet wire with a thermoplastic or thermosetting overcoat that fuses adjacent turns when heated, producing a self-supporting coil without an impregnating varnish. Ideal for voice coils, speaker coils, sensor coils, and complex free-standing windings.\u003c\/p\u003e\n\u003ch4\u003eActivation\u003c\/h4\u003e\n\u003cp\u003eHeat, solvent, or resistance heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eNylon-Overcoated\u003c\/h3\u003e\n\u003cp\u003eA thin polyamide top layer added over the base enamel to improve winding lubricity, abrasion resistance, and chemical resistance. Frequently specified for high-speed automatic winding where the wire must survive tight, fast lay-down.\u003c\/p\u003e\n\u003ch4\u003eTypical base coats\u003c\/h4\u003e\n\u003cp\u003ePolyester or polyester-imide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire Forms and Shapes\u003c\/h2\u003e\n\u003cp\u003eEnameled copper wire is supplied in several conductor geometries to match different winding techniques and slot-fill requirements.\u003c\/p\u003e\n\u003ch3\u003eRound Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eThe standard form for the majority of motor, transformer, relay, and coil applications. Round magnet wire is available across a very wide AWG range — from fine gauges under 50 AWG for precision electronics to heavy gauges above 10 AWG for large motor and transformer windings.\u003c\/p\u003e\n\u003ch3\u003eRectangular and Flat Magnet Wire\u003c\/h3\u003e\n\u003cp\u003eRectangular or square enameled copper wire packs more copper into a given slot than round wire, raising the fill factor and improving thermal performance. It is used in high-power traction motors, large generator coils, welding transformers, and high-current inductors where space efficiency is critical.\u003c\/p\u003e\n\u003ch3\u003eMulti-Strand and Litz Constructions\u003c\/h3\u003e\n\u003cp\u003eFor high-frequency applications, multiple fine enameled wires are twisted or braided together into \u003cstrong\u003eLitz wire\u003c\/strong\u003e to reduce skin-effect and proximity-effect losses. Stranded magnet wire constructions also offer greater flexibility for bend-intensive coil designs.\u003c\/p\u003e\n\u003ch2\u003eTemperature Class and Insulation Build\u003c\/h2\u003e\n\u003ch3\u003eUnderstanding Thermal Class\u003c\/h3\u003e\n\u003cp\u003eEvery enameled copper wire carries a thermal class that indicates the maximum sustained temperature the insulation can endure over a rated service life — commonly 20,000 hours. Choosing a class with headroom above the actual operating temperature extends motor and transformer life.\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Class\u003c\/th\u003e\n\u003cth\u003eMaximum Sustained Temperature\u003c\/th\u003e\n\u003cth\u003eTypical Enamel Chemistry\u003c\/th\u003e\n\u003cth\u003eCommon Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e130°C (Class B)\u003c\/td\u003e\n\u003ctd\u003e130°C\u003c\/td\u003e\n\u003ctd\u003ePolyurethane, Polyester\u003c\/td\u003e\n\u003ctd\u003eSmall transformers, relays, general coils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e155°C (Class F)\u003c\/td\u003e\n\u003ctd\u003e155°C\u003c\/td\u003e\n\u003ctd\u003ePolyester, Polyurethane\u003c\/td\u003e\n\u003ctd\u003eAppliance motors, fans, lighting ballasts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e180°C (Class H)\u003c\/td\u003e\n\u003ctd\u003e180°C\u003c\/td\u003e\n\u003ctd\u003ePolyester-Imide\u003c\/td\u003e\n\u003ctd\u003eCompressors, automotive alternators, power tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200°C (Class N)\u003c\/td\u003e\n\u003ctd\u003e200°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide over EIW\u003c\/td\u003e\n\u003ctd\u003eTraction motors, industrial drives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e220°C (Class R)\u003c\/td\u003e\n\u003ctd\u003e220°C\u003c\/td\u003e\n\u003ctd\u003ePolyamide-Imide, aromatic polyimide\u003c\/td\u003e\n\u003ctd\u003eAerospace, high-performance generators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eInsulation Build: Single, Heavy, and Triple\u003c\/h3\u003e\n\u003cp\u003e\"Build\" refers to the total thickness of the enamel film. A heavier build increases dielectric withstand voltage but slightly reduces copper fill factor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle build\u003c\/strong\u003e — thinnest insulation; maximum copper density for low-voltage, well-supported windings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy build\u003c\/strong\u003e — the most common choice; added dielectric margin for typical motor and transformer voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple build\u003c\/strong\u003e — thickest film; specified for high-voltage or surge-prone windings and for inverter-fed motors exposed to fast voltage pulses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow Magnet Wire Is Made\u003c\/h2\u003e\n\u003col class=\"rk-process\"\u003e\n\u003cli\u003e\n\u003ch4\u003eCopper Rod Breakdown and Wire Drawing\u003c\/h4\u003e\n\u003cp\u003eProduction starts with a copper rod that is pulled through a series of diamond or tungsten-carbide dies, reducing its cross-section in stages until it reaches the target AWG diameter. Fine gauges may go through dozens of drawing steps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eContinuous Annealing\u003c\/h4\u003e\n\u003cp\u003eThe drawn wire is passed through a controlled-atmosphere annealing furnace to soften the copper, restore its ductility, and remove work-hardening introduced during drawing. Clean, oxide-free copper is essential for good enamel adhesion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eEnamel Application and Curing\u003c\/h4\u003e\n\u003cp\u003eLiquid enamel varnish is applied by felt or die and cured in a long, temperature-controlled oven. The wire makes multiple passes — often 6 to 12 or more — building the film layer by layer to the required build and ensuring complete coverage without pinholes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eLubrication and Spooling\u003c\/h4\u003e\n\u003cp\u003eA thin surface lubricant may be applied to help the wire feed smoothly through high-speed winding machines. The finished enameled copper wire is then spooled onto plastic or metal reels in continuous lengths.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch4\u003eIn-Line Quality Control\u003c\/h4\u003e\n\u003cp\u003eEvery spool is checked for continuity, insulation defects (pinholes and bare spots via high-voltage spark testing), dimensional consistency, surface finish, and adhesion. Thermal and dielectric properties are verified on sampled production lots.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eApplications of Enameled Copper Wire\u003c\/h2\u003e\n\u003cp\u003eBecause roughly 90% of all electrical energy passes through a motor, transformer, or coil at some point, magnet wire is one of the most widely used conductors in the modern economy.\u003c\/p\u003e\n\u003cdiv class=\"rk-grid\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eElectric Motors and Generators\u003c\/h3\u003e\n\u003cp\u003eIndustrial motors, EV traction motors, appliance motors, servo motors, fans, pumps, and portable generators all rely on enameled copper wire in their stator and rotor windings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eTransformers and Inductors\u003c\/h3\u003e\n\u003cp\u003ePower transformers, distribution transformers, high-frequency switch-mode transformers, toroidal inductors, chokes, and ballasts use solderable or high-temperature magnet wire depending on frequency and voltage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eAutomotive Electrification\u003c\/h3\u003e\n\u003cp\u003eAlternators, starter motors, electric power steering, ABS actuators, on-board chargers, and EV drivetrain components use high-temperature polyester-imide and polyamide-imide magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRelays, Solenoids, and Actuators\u003c\/h3\u003e\n\u003cp\u003eFine-gauge polyurethane magnet wire is wound into relay coils, solenoid valves, contactors, and linear actuators where direct solderability and compact size matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsumer Electronics and Audio\u003c\/h3\u003e\n\u003cp\u003eSpeaker voice coils, headphone drivers, guitar pickups, watch coils, camera actuators, wireless-charging coils, and magnetic sensor coils use self-bonding and fine-gauge enameled wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eRenewable Energy and Industry\u003c\/h3\u003e\n\u003cp\u003eWind turbine generators, solar inverters, welding equipment, induction heaters, UPS systems, and magnet assemblies depend on heavy-build, high-temperature magnet wire for long service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRange \/ Options\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eMagnet Wire \/ Enameled Copper Wire \/ Winding Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor material\u003c\/td\u003e\n\u003ctd\u003eHigh-purity copper (round, rectangular, or stranded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAWG range\u003c\/td\u003e\n\u003ctd\u003eFine gauges (50+ AWG) through heavy gauges (4–10 AWG and larger); metric diameters also available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation chemistry\u003c\/td\u003e\n\u003ctd\u003ePolyurethane (UEW), Polyester (PEW), Polyester-Imide (EIW), Polyamide-Imide (AIW), composite dual coats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal class\u003c\/td\u003e\n\u003ctd\u003e130°C \/ 155°C \/ 180°C \/ 200°C \/ 220°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation build\u003c\/td\u003e\n\u003ctd\u003eSingle, heavy, triple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercoat options\u003c\/td\u003e\n\u003ctd\u003eNylon overcoat, self-bonding overcoat, paraffin or nylon lubricant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor shape\u003c\/td\u003e\n\u003ctd\u003eRound, rectangular \/ flat, square, Litz \/ stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpool packaging\u003c\/td\u003e\n\u003ctd\u003ePlastic spools, metal reels, barrel pack; custom put-ups and continuous lengths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards compliance\u003c\/td\u003e\n\u003ctd\u003eNEMA MW 1000, IEC 60317, JIS C 3202; RoHS and REACH compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolderability\u003c\/td\u003e\n\u003ctd\u003eDirect-solderable on polyurethane types; other types require mechanical or thermal stripping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical colors\u003c\/td\u003e\n\u003ctd\u003eNatural amber\/clear; red, green, blue, and other colors available for identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"rk-note\"\u003eAWG (American Wire Gauge) is the standard sizing system used in North America. If your design uses metric diameters, we can cross-reference and supply to the equivalent AWG size.\u003c\/p\u003e\n\u003ch2\u003eValue-Added Processing Services\u003c\/h2\u003e\n\u003cp\u003eBeyond supplying raw enameled copper wire on standard spools, RapidKeen provides processing that saves time and waste on your production line.\u003c\/p\u003e\n\u003ch3\u003eCut-to-Length and Precision Spooling\u003c\/h3\u003e\n\u003cp\u003eWire can be supplied in exact continuous lengths, respooled onto your preferred spool type, or traverse-wound for tangle-free payout on high-speed winding equipment. This reduces setup time and scrap from short ends.\u003c\/p\u003e\n\u003ch3\u003eStranding, Twisting, and Bunching\u003c\/h3\u003e\n\u003cp\u003eMultiple fine magnet wires can be stranded, twisted, or bunched into Litz or multi-strand constructions to reduce high-frequency AC losses or improve flexibility for dynamic coil applications.\u003c\/p\u003e\n\u003ch3\u003eInsulation Stripping and Termination Preparation\u003c\/h3\u003e\n\u003cp\u003eFor non-solderable insulations such as polyester-imide and polyamide-imide, we can supply wire with enamel removed from cut ends using mechanical, thermal, or chemical stripping methods, ready for crimping, welding, or soldering.\u003c\/p\u003e\n\u003ch3\u003eTransposing and Formed Coils\u003c\/h3\u003e\n\u003cp\u003eFor large rectangular magnet wire used in transformers and traction motors, transposing and edge-bending services reduce circulating-current losses and produce coils that drop directly into your assembly.\u003c\/p\u003e\n\u003ch2\u003eWhy Source Magnet Wire from RapidKeen\u003c\/h2\u003e\n\u003cdiv class=\"rk-grid-2\"\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eConsistent Enamel Quality\u003c\/h3\u003e\n\u003cp\u003eMulti-pass enameling with in-line spark testing means uniform film thickness, minimal pinholes, and reliable dielectric performance spool after spool — fewer winding stoppages and field failures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eBroad AWG and Insulation Selection\u003c\/h3\u003e\n\u003cp\u003eFrom ultra-fine electronics wire to heavy-gauge motor windings, with every major enamel chemistry and build, you can consolidate enameled copper wire purchases across multiple product lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eApplication-Focused Support\u003c\/h3\u003e\n\u003cp\u003eWe help match thermal class, build, and conductor shape to your voltage, temperature, frequency, and winding method — so you don't over-specify or under-insulate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-card\"\u003e\n\u003ch3\u003eFlexible Packaging and Processing\u003c\/h3\u003e\n\u003cp\u003eCustom put-ups, cut lengths, stranding, and stripping services align deliveries with your production schedule and reduce in-house handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eMagnet Wire vs. Related Products\u003c\/h2\u003e\n\u003cp\u003eBuyers sometimes compare enameled copper wire with other copper wire products. The distinctions matter for correct selection:\u003c\/p\u003e\n\u003cdiv class=\"rk-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet Wire \/ Enameled Copper Wire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThin polymer enamel film (micrometers)\u003c\/td\u003e\n\u003ctd\u003eCoil winding: motors, transformers, inductors, solenoids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulated copper hook-up wire\u003c\/td\u003e\n\u003ctd\u003eThick PVC, silicone, or PTFE jacket\u003c\/td\u003e\n\u003ctd\u003ePoint-to-point circuit wiring, harnesses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBare copper wire\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eGrounding, bus bars, craft, jewelry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTinned copper wire\u003c\/td\u003e\n\u003ctd\u003eNone (tin plating for soldering)\u003c\/td\u003e\n\u003ctd\u003eElectrical connections, bus bars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLitz wire\u003c\/td\u003e\n\u003ctd\u003eEnamel film on each individual strand\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency coils, wireless charging, induction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between magnet wire and regular copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eMagnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eIs magnet wire the same as enameled copper wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eYes. \"Magnet wire\" is the standard North American term, while \"enameled copper wire,\" \"enameled wire,\" and \"winding wire\" describe the same product internationally. All refer to a copper conductor with a cured polymer film insulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eCan enameled copper wire be soldered directly?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003ePolyurethane (UEW) magnet wire is directly solderable — the enamel dissolves in molten solder at around 370–400°C without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped mechanically, thermally, or chemically before soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhich temperature class of magnet wire do I need?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelect a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155°C or 180°C; automotive and compressor windings commonly use 180°C; traction motors and high-reliability industrial drives use 200°C or 220°C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat does AWG mean for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eAWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire: 30 AWG is a fine electronics wire, while 14 AWG is a heavy motor winding wire. The gauge determines current capacity and DC resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is self-bonding magnet wire used for?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eSelf-bonding magnet wire has an additional adhesive overcoat that fuses turns together when heated, creating a rigid, self-supporting coil without varnish impregnation. It is widely used for speaker voice coils, sensor coils, and intricate coil shapes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhy is copper used instead of aluminum for magnet wire?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eCopper offers higher electrical conductivity, better thermal performance, and easier termination than aluminum. Aluminum magnet wire is sometimes chosen for large, cost-sensitive transformers because it is lighter and cheaper, but it requires a larger cross-section and special joining techniques.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rk-faq\"\u003e\n\u003ch3\u003eWhat is the difference between single, heavy, and triple build insulation?\u003c\/h3\u003e\n\u003cdiv class=\"rk-a\"\u003e\n\u003cp\u003eBuild refers to enamel thickness. Single build maximizes copper density for low-voltage windings; heavy build is the general-purpose standard; triple build provides extra dielectric withstand for high-voltage or inverter-fed motors exposed to voltage surges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 30px; color: #666; font-size: 14px; border-top: 1px solid #e1f0f2; padding-top: 14px;\"\u003eKeywords: magnet wire, enameled copper wire, enamel coated copper wire, insulated copper wire, winding wire, copper magnet wire, enameled wire, magnetic wire, coil winding wire, AWG magnet wire, solderable magnet wire, high temperature magnet wire, round magnet wire, flat magnet wire, polyurethane magnet wire, polyester enameled wire, polyester-imide magnet wire, polyamide-imide magnet wire, self-bonding magnet wire, motor winding wire, transformer magnet wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Magnet Wire - Enameled Copper Wire\",\n  \"description\": \"Magnet wire (enameled copper wire) with polyurethane, polyester, polyester-imide, and polyamide-imide insulation for motors, transformers, inductors, and coil winding applications.\",\n  \"category\": \"Electrical Wire\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"RapidKeen\"},\n  \"additionalProperty\": [\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Material\", \"value\": \"Copper\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Insulation Type\", \"value\": \"Enamel polymer film\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Thermal Class\", \"value\": \"130°C - 220°C\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Conductor Shape\", \"value\": \"Round, Rectangular, Stranded\/Litz\"}\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"What is the difference between magnet wire and regular copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Magnet wire is copper wire coated with a very thin enamel insulation, allowing it to be wound into tight coils where turns touch without shorting. Regular copper wire is either bare or covered with a thick plastic jacket intended for circuit wiring, not dense coil winding.\"}},\n    {\"@type\": \"Question\", \"name\": \"Is magnet wire the same as enameled copper wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Magnet wire is the standard North American term, while enameled copper wire, enameled wire, and winding wire describe the same product internationally.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can enameled copper wire be soldered directly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Polyurethane (UEW) magnet wire is directly solderable without prior stripping. Polyester, polyester-imide, and polyamide-imide insulations must be stripped before soldering.\"}},\n    {\"@type\": \"Question\", \"name\": \"Which temperature class of magnet wire do I need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Select a thermal class with a safety margin above your coil's maximum operating temperature. General-purpose motors often use 155C or 180C; automotive and compressor windings use 180C; traction motors use 200C or 220C.\"}},\n    {\"@type\": \"Question\", \"name\": \"What does AWG mean for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"AWG (American Wire Gauge) is the standard sizing system in North America. A higher AWG number means a thinner wire and determines current capacity and DC resistance.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is self-bonding magnet wire used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Self-bonding magnet wire has an adhesive overcoat that fuses turns when heated, creating a rigid self-supporting coil without varnish, used for voice coils and sensor coils.\"}},\n    {\"@type\": \"Question\", \"name\": \"Why is copper used instead of aluminum for magnet wire?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Copper offers higher conductivity, better thermal performance, and easier termination. Aluminum is lighter and cheaper but needs a larger cross-section and special joining.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is the difference between single, heavy, and triple build insulation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Build refers to enamel thickness. Single build maximizes copper density, heavy build is the general-purpose standard, and triple build adds dielectric withstand for high-voltage windings.\"}}\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e","brand":"RapidKeen","offers":[{"title":"36 AWG (0.13 mm) \/ 155°C \/ Full Spool 1050 m (3445ft)","offer_id":44049292886075,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"},{"product_id":"magnet-wire-33-awg-enameled-copper-wire-for-coil-winding","title":"Magnet Wire 33 AWG Enameled Copper Wire for Coil Winding","description":"\u003cstyle\u003e\n.rk-mw{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;color:#222;line-height:1.75;font-size:16px;max-width:1100px;margin:0 auto;padding:0 16px;box-sizing:border-box}\n.rk-mw *{box-sizing:border-box}\n.rk-mw h2{font-size:26px;color:#005969;margin:42px 0 16px;padding-bottom:10px;border-bottom:3px solid #00AAFF;line-height:1.35}\n.rk-mw h3{font-size:20px;color:#005969;margin:28px 0 10px;line-height:1.4}\n.rk-mw p{margin:0 0 14px}\n.rk-mw .rk-lead{font-size:17px;color:#333;background:#f3fafb;border-left:4px solid #00AAFF;padding:16px 20px;border-radius:0 8px 8px 0;margin:0 0 24px}\n.rk-mw .rk-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:18px 0 24px}\n.rk-mw .rk-card{background:#fafdfe;border:1px solid #e1f0f2;border-radius:10px;padding:18px 20px;transition:box-shadow .2s}\n.rk-mw .rk-card:hover{box-shadow:0 4px 16px rgba(0,89,105,.1)}\n.rk-mw .rk-card h3{margin-top:0}\n.rk-mw .rk-tag{display:inline-block;background:#e6f7ff;color:#005969;border:1px solid #b3e5fc;border-radius:20px;padding:5px 14px;font-size:14px;margin:4px 6px 4px 0}\n@media(max-width:640px){\n  .rk-mw{font-size:15px;padding:0 12px}\n  .rk-mw h2{font-size:22px;margin:32px 0 12px}\n  .rk-mw h3{font-size:18px}\n  .rk-mw .rk-grid-2{grid-template-columns:1fr;gap:14px}\n  .rk-mw .rk-lead{font-size:15px;padding:14px 16px}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"rk-mw\"\u003e\n\n\u003ch2\u003eWhat Is Magnet Wire?\u003c\/h2\u003e\n\n\u003cp class=\"rk-lead\"\u003e\u003cstrong\u003eMagnet wire\u003c\/strong\u003e — also known as \u003cstrong\u003eenameled copper wire\u003c\/strong\u003e, enamel-coated copper wire, or winding wire — is a solid copper conductor covered with a very thin, tough layer of polymer insulation. Unlike ordinary insulated copper wire with its thick plastic jacket, magnet wire relies on a micrometer-thin enamel film that lets thousands of turns sit tightly side by side in a coil without short-circuiting. It is the fundamental conductor inside every device that converts electrical energy into a magnetic field.\u003c\/p\u003e\n\n\u003cp\u003eRaw copper is drawn through precision dies to reach the exact AWG size required for each application, then annealed to restore ductility before the enamel is applied and cured. The result is a flexible, high-conductivity copper magnet wire that can be wound into dense, compact coils for transformers, motors, solenoids, instruments, and a wide range of electromagnetic devices.\u003c\/p\u003e\n\n\u003cdiv class=\"rk-grid-2\"\u003e\n  \u003cdiv class=\"rk-card\"\u003e\n    \u003ch3\u003ePolyurethane Insulation — 155°C Rated\u003c\/h3\u003e\n    \u003cp\u003eThe insulation on this enameled copper wire is made from modified polyurethane, a solderable enamel that delivers reliable dielectric performance at a continuous operating temperature of 155°C (311°F). Polyurethane magnet wire can be soldered directly without prior stripping — the film dissolves cleanly into molten solder — making it a preferred choice for fast, efficient coil termination. The enamel coating protects adjacent turns from short-circuiting while adding almost no bulk, maximizing the copper fill factor in every winding.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"rk-card\"\u003e\n    \u003ch3\u003eManufactured to NEMA Magnet Wire Standards\u003c\/h3\u003e\n    \u003cp\u003eEvery spool of this enameled copper wire is produced to meet the dimensional and performance requirements set by the National Electrical Manufacturers Association (NEMA) for magnet wire. NEMA standards cover conductor resistance, insulation build, dielectric strength, and thermal endurance, ensuring consistent, predictable performance across production runs. Whether you are winding a small relay coil or a large transformer, you can rely on uniform enamel coverage and dependable electrical insulation spool after spool.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCommon Applications of Enameled Copper Wire\u003c\/h3\u003e\n\u003cp\u003eBecause of its compact insulation and excellent electrical properties, this 155°C polyurethane magnet wire is widely used across industries for:\u003c\/p\u003e\n\n\u003cdiv\u003e\n  \u003cspan class=\"rk-tag\"\u003eTransformers\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eWound coils\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eElectric motors\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eSolenoids\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eRelays\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eInductors\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eInstruments \u0026amp; meters\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eGenerators\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eSpeaker voice coils\u003c\/span\u003e\n  \u003cspan class=\"rk-tag\"\u003eSensors \u0026amp; actuators\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top:20px\"\u003eFrom fine-gauge coil winding wire for precision instruments to heavier gauges for motor and transformer windings, enameled copper wire remains the most widely used magnetic wire in electrical manufacturing — valued for its high conductivity, thermal stability, and space-saving enamel insulation.\u003c\/p\u003e\n\n\u003c\/div\u003e\n","brand":"RapidKeen","offers":[{"title":"33 AWG (0.18 mm) \/ 155°C \/ Full Spool 700 m (2297ft)","offer_id":44049337090107,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787495234"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/collections\/enameled-copper-magnet-wire-motor-stator-coil-winding.webp?v=1787846178","url":"https:\/\/rapidkeen.com\/collections\/enameled-magnet-wire.oembed?page=2","provider":"RapidKeen","version":"1.0","type":"link"}