2USTC-F 0.1mmx150 Multiple Strands Copper Litz Wires for Transformer

Short Description:

Single wire diameter: 0.1mm, Number of strands:150

Thermal rating: class 150, Max.OD: 1.81mm

MOQ:20KG,

1KG=91M

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Product Detail

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Introduction

Silk covered litz wire is a high-performance stranded conductor specifically engineered to reduce AC losses—namely skin effect and proximity effect—in high-frequency applications. The construction begins with 150 individual strands of 0.1 mm polyurethane enameled copper wire (commonly known as "solderable enameled copper wire). These strands are precisely twisted together to form a uniform litz bundle, which ensures that each strand occupies different positions within the cross-section, thereby equalizing current distribution and minimizing resistance at elevated frequencies.

Standard

·IEC 60317-23

·NEMA MW 77-C

·customized according to customer requirements.

Advantages

Advantages include exceptionally low high-frequency resistance (compared to solid wire or simple stranded wire), direct solderability without chemical stripping, and excellent mechanical durability from the nylon wrap.

Typical applications span RF transformers, induction heating coils, wireless power transfer systems, high-frequency inductors in switching power supplies, medical devices (e.g., MRI gradient coils), and precision audio or aerospace electronics where efficiency and reliability are critical.

The combination of 150 fine solderable strands and a protective nylon cover makes this wire a versatile, production-friendly choice for modern high-frequency circuit design.

Features

A key feature of this wire is the polyurethane enamel on each strand. Unlike traditional enamels (e.g., polyester or polyimide), polyurethane enamel allows direct soldering without pre-stripping. When a soldering iron (typically 350–400°C) is applied, the enamel film decomposes and flows away, leaving clean copper ready for tinning. This property greatly simplifies termination and reduces manufacturing time.

The entire twisted litz wire is then wrapped with a nylon yarn outer covering. This outer layer serves multiple purposes: it protects the delicate litz wire from abrasion and mechanical damage during winding; it provides additional electrical insulation between adjacent turns; and it gives the wire a smooth, uniform surface that is easy to handle and wind into coils.

Specification

Item	Tech requirement	Sample 1	Sample 2
Our diameter of single wire mm	0.107-0.125	0.110	0.113
Conductor diameter mm	0.10±0.003	0.098	0.100
OD mm	Max.1.81	1.53	1.60
Resistance Ω /m(20℃ )	≤0.01587	0.01467	0.01462
Breakdown voltage V	≥1100	3000	2900
Pitch	27±3	√	√
Pinhole test	49faults/6m	10	8
Solderability	Temp. 390±5℃ 8s Smooth surface, no pinholes, no residue	√	√

Application

5G base station power supply

EV Charging Stations

Industrial Motor

Maglev Trains

Medical Electronics

Wind Turbines

Certificates

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About us

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.