2USTC-F 0.025mmx10 Silk covered litz wire for voice coils
This is a new design and new produced super thin silk covered litz wire, a premium solution designed for high-performance audio applications. The single wire is only 0.025 mm in diameter, the litz wire is composed of 10 strands twisted together, ensuring excellent flexibility and conductivity. Due to its extremely thinness, extra care must be taken during manufacturing and use to avoid short circuits.
·IEC 60317-23
·NEMA MW 77-C
·customized according to customer requirements.
This type of silk-covered Litz wire is primarily used in the production of voice coil wire, a crucial component in various audio devices, including speakers and headphones. Voice coil wire is renowned for its lightweight, low-impedance characteristics, enabling it to deliver high-fidelity sound. The silk-covering layer not only enhances its aesthetics but also provides additional insulation and environmental protection.
We offer full customization services for litz wire, including nylon served litz wire, taped litz wire, flat taped litz wire, ETFE litz wire, tailored to your specific needs. This wire is developed to customer specifications. If you are designing wire for your product, you can tell us the required single wire diameter, number of strands, outer wrapping material, required resistance, and overall diameter. Our professional team is ready to provide technical support and assist you in designing wire that perfectly matches your system requirements.
Our silk covered Litz wire represents the pinnacle of precision engineering in audio applications, offering unparalleled performance and reliability for voice coil structures. Whether you are a manufacturer or an audiophile, this cable will undoubtedly elevate your audio projects to new heights.
| Item | Technical requests | Test result | ||||
| Conductor Diameter (mm) | 0.0250-0.0270 | 0.0251 | 0.0258 | 0.0253 | 0.0254 | 0.0254 |
| Single wire diameter (mm) | 0.0330-0.0350 | 0.0347 | 0.0339 | 0.0346 | 0.0348 | 0.0349 |
| O.D. (mm) | 0.127-0.168 | 0.134 | 0.133 | 0.136 | 0.135 | 0.134 |
| Resistance of single wire Ω/m (20℃) | 29.81-34.77 | 31.95 | 31.76 | 31.88 | 31.99 | 31.96 |
| Resistance of litz wireΩ/m (20℃) | 2.98-4.11 | 3.273 | 3.306 | 3.298 | 3.312 | 3.321 |
| Breakdown Voltage V | Min.500 | 958 | 1036 | 985 | 1147 | 985 |
| Pitch mm | 3 ± 1 | 3.2 | 3.2 | 3.0 | 3.1 | 3.0 |
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.















