2UDTC-F 0.071mmx250 Natural Silk Covered Litz Wire
This silk covered litz wire's unique construction provides excellent conductivity and effectively reduces skin effect, making it ideal for high-frequency applications.
In transformer winding, the wire's flexibility and durability ensure it withstands the rigors of continuous operation while maintaining optimal performance. Furthermore, the natural silk covering provides excellent insulation, further enhancing the wire's performance in harsh environments. Whether you're designing a new transformer or developing a high-fidelity audio system, our silk covered litz wire delivers exceptional performance.
With over 23 years of experience in litz wire manufacture, we pride ourselves on our expertise and commitment to quality. Our extensive product line includes not only silk-covered litz wire, but also taped litz wire, taped flat litz wire, and stranded wire.
This broad selection enables us to meet diverse application needs across a wide range of industries. We understand that every project is unique, so we're committed to providing customized solutions to meet your specific needs. Working closely with our customers, we ensure the final product meets their exact design specifications.
Our company understands the importance of supporting startups and small businesses. We offer a small, customizable ordering service, enabling you to order the quantity of silk covered litz wire you need without the burden of excessive inventory. This flexibility allows you to bring innovative ideas to life while maintaining cost-effectiveness. Our team is committed to working with you throughout the entire process, from initial design to final production, to ensure you receive a high-quality product that exceeds your expectations.
Item |
Technical requests |
Test value 1 |
Test value 2 |
Conductor Diameter (mm) |
0.076-0.084 |
0.079 |
0.080 |
Single wire diameter (mm) |
0.071±0.003 |
0.068 |
0.070 |
O.D. (mm) |
Max. 1.85 |
1.57 |
1.68 |
Resistance Ω/m (20℃) |
Max. 0.01196 |
0.01815 |
0.01812 |
Breakdown Voltage V |
950 |
3100 |
3000 |
Pitch mm |
29± 5 |
√ |
√ |
No. of strands |
250 |
√ |
√ |
5G base station power supply

EV Charging Stations

Industrial Motor

Maglev Trains

Medical Electronics

Wind Turbines












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.



