2USTC-F 0.2mm x 300 High Frequency Silk Covered Litz Wire For Transformer
Built to withstand temperatures up to 155 degrees Celsius to ensure reliability even in harsh environments, this silk cover is constructed from 300 strands that are uniquely designed to minimize skin and proximity effects.
In addition, we offer a choice of polyester yarn and real silk, allowing you to select the best material for your project.
Item | Conductor outer
diameter mm |
Conductor diameter
mm |
O.D.
mm |
Resistance Ω/m(20℃) | Dielectric strength v | Solderability |
Tech requirement | 0.216-0.231 | 0.2 | 5.49 | 0.001924 | 1600 | 390±5℃, 25s |
± | 0.003 | Max | Max. | Min | Smooth,
no pinhole |
|
1 | 0.219-0.224 | 0.198-0.2 | 4.74-5.0 | 0.001843 | 3800 | 130 |
Customization is at the heart of our products. We understand that every application is unique, which is why we offer fully customizable silk covered litz wire. Our team can customize the specifications to meet your exact needs, including the choice of polyester yarn or silk as the outer layer.
Additionally, we offer enameled enameled wires with diameters ranging from 0.025 mm to 0.8 mm, and with strands up to 10,000. This flexibility ensures that you get a product that is perfectly suited to your specific application.
One of the most important applications is in transformer windings. Transformers are key components in electrical systems, responsible for transferring electrical energy between circuits. The use of stranded wires in transformer windings improves efficiency by reducing losses due to skin effect and proximity effect. Our silk covered litz wire offers superior insulation and customizable features, making it especially suitable for this application. It ensures that the transformer is operating at optimal performance levels, helping to improve the overall efficiency of the electrical system.
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.





