Custom Natural Silk Covered Litz Wire
Custom natural silk covered litz wire with 4000 strands of 0.03mm solderable enameled copper wire, specifically engineered for high-frequency transformer applications.
Key Features
- 4000 strands of 0.03mm Class 155 polyurethane solderable enameled copper wire for ultra-fine stranding and minimized AC losses
- Natural silk jacket custom-developed to customer specifications
- Superior varnish and resin penetration compared to synthetic alternatives
- Rectangular version available for optimal space utilization in transformer core windows
- Ideal for high-frequency transformer primary and secondary windings in precision power electronics
- Mitigates skin and proximity effects for enhanced thermal management and higher efficiency
- Flexible design facilitates winding on complex or tight core shapes
Performance Advantages
Our custom natural silk covered litz wire is specifically designed for high-frequency transformer applications where precision winding and optimal impregnation are critical. The 4000 ultra-fine strands of 0.03mm Class 155 solderable enameled copper wire significantly reduce skin and proximity effects - primary causes of energy loss in solid conductors at high frequencies. This results in lower AC resistance, reduced heat dissipation, and improved current distribution throughout the winding.
The natural silk outer covering provides exceptional penetration for varnishes and impregnating resins, enabling complete encapsulation of the strand bundle. This enhances mechanical strength, thermal conductivity, and long-term reliability in demanding transformer environments.
Technical Specifications
| Parameter |
Technical Requirement |
Sample Measurement |
| Single Wire Diameter (mm) |
0.038-0.046 |
0.040 |
| Conductor (mm) |
0.03±0.003 |
0.031 |
| Outer Diameter (mm) |
≤3.43 |
3.13 |
| Resistance (Ω/km) |
≤7.43 |
6.616 |
| Dielectric Strength (kV) |
≥0.2 |
2.8 |
| Pitch (mm) |
50±2 |
50 |
| Number of Strands |
4000 |
4000 |
Applications
Ideal for high-frequency transformers, medical equipment, aerospace applications, precision sensors, and audio products where signal integrity and flexibility are critical. Also suitable for power modules in consumer, automotive, and industrial power supplies requiring excellent heat dissipation.
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Frequently Asked Questions
Can I get samples for testing before placing a batch order?
Yes. Samples are either free or charged, but the shipping cost is borne by the customer.
What is your delivery lead time?
Sample orders: 3-5 working days; bulk orders: completed within 15 working days after order confirmation.
What is the procurement process?
Submit inquiry with requirements → Sample making → Sample approval → Quotation → Proforma Invoice (PI) → PI confirmation → Payment arrangement → Production → Shipment
Can I customize products with my own logo, size, and shape?
Yes, but the MOQ (Minimum Order Quantity) is subject to negotiation.
What are your payment methods?
T/T, D/P, L/C, PayPal.
Which courier services do you use?
FedEx, DHL, TNT, UPS, with discounts up to 80%.
What testing equipment do you have?
Laser diameter gauge, high-voltage spark tester, elongation tester, spring-back tester, withstand voltage tester, solderability tester, Resistance Tester etc.
Which customers or markets are your products suitable for?
Our products are ideal for applications requiring high efficiency and space-saving solutions in high-frequency AC environments, including power electronics & power supplies, EV on-board chargers, wireless charging systems, green energy, communications & IT, medical equipment, industrial robots, servo motors, etc.
Which countries or regions have you exported to?
Major markets include Europe and the US, as well as South Korea, Japan, India, and Southeast Asia.
How do you keep customer information confidential?
We can sign a non-disclosure agreement (NDA) upon request and commit to strictly abiding by its terms throughout the entire cooperation process.
All specifications are subject to standard manufacturing tolerances. Contact us to discuss your specific winding requirements and for detailed technical data sheets and custom specifications.
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