2USTC-F 0.04mmX600 High Frequency silk covered litz wire for transformer
Our custom silk covered litz wire is a premium solution for transformer windings and other high-performance electrical applications. Featuring a thin diameter, high strand count and excellent temperature resistance, this wire is designed to meet the needs of modern engineering. Whether you're an engineer, technician or hobbyist, the silk covered litz wire gives you the reliability and performance you need for a successful project. Explore the possibilities of our innovative wires and experience the difference quality materials can make in your electrical designs.
The silk covered litz wire can be used in transformer windings, especially in applications where high frequency performance is important. Litz wire is designed to reduce skin effect and proximity effect losses, making it suitable for use in high frequency transformers.
The versatility of our silk covered litz wire extends beyond transformer windings. Its superior performance makes it suitable for a wide range of applications, including audio equipment, RF coils and other high-frequency equipment. we offer polyester yarn and real silk options, allowing you to customize the wire to meet your specific project requirements.
At the heart of our silk covered litz wire is a commitment to quality. Each batch of products undergoes rigorous testing to ensure it meets industry standards and exceeds customer expectations. Our manufacturing process follows strict quality control measures, ensuring every strand of wire is crafted with precision and care. This commitment to excellence means you can trust our wire-covered litz wire to deliver consistent performance in even the most challenging applications.
Item | Tech requirement | Test value |
Conductor outer diameter mm | 0.043-0.056 | 0.047-0.049 |
Conductor diameter mm | 0.04±0.002 | 0.038-0.039 |
O.D.mm | Max.1.87 | 1.35-1.47 |
Resistance Ω/m(20℃) | Max.0.02612 | 0.02359 |
Dielectric strength v | Min.1300 | 2400 |
Solderability | 390±5℃, 8s Smooth,no pinhole | √ |
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Founded in 2002, Ruiyuan has been in the manufacture of enamelled copper wire for 20 years.We combine the best manufacturing techniques and enamel materials to create a high-quality, best-in-class enameled wire. The enameled copper wire lies at the heart of technology we use every day – appliances, generators, transformers, turbines, coils and much more. Nowadays, Ruiyuan has the global footprint to support our partners in marketplace.

Our Team
Ruiyuan attracts many outstanding technical and management talents, and our founders have built the best team in the industry with our long-term vision. We respects the values of each employee and provides them with a platform to make Ruiyuan a great place to grow a career.



