2USTC 0.03X4000 Natural Silk Covered Litz Wire
Our custom silk covered litz wire offers superior performance with natural silk insulation, providing a premium alternative to standard nylon or polyester yarn products. This exceptional wire features ultra-fine enameled copper strands measuring just 0.03mm in diameter, twisted into a compact bundle of 4,000 strands with an outer diameter no larger than 3.43mm for space-constrained applications.
Key Features
- Natural silk insulation for superior high-frequency performance
- 4,000 ultra-fine strands (0.03mm diameter each)
- Compact design with OD ≤ 3.43mm
- 200V minimum dielectric withstand voltage
- Excellent flexibility and signal integrity
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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