This 0.040mm×28000 litz wire is stranded with 3UEW H Class H 180°C self-solderable enameled wires and fully extruded with high-performance ETFE insulation. The ultra-fine multi-strand structure eliminates skin and proximity effects for ultra-low high-frequency loss. It features outstanding heat resistance, insulation stability and flexibility, ideal for high-current, high-temperature and high-voltage applications in new energy, AI servers, medical and industrial power systems.

• 3UEW H 180°C High Temperature Resistance: Standard Class H insulation supports long-term stable operation under high temperature and heavy load, offering better reliability than common F-grade wires.
• Ultra-Low High-Frequency Loss: 28000 ultra-fine strand structure optimizes high-frequency conductivity, effectively reducing impedance and power loss to boost equipment conversion efficiency.
• High-Performance ETFE Extruded Insulation: ETFE outer insulation delivers excellent high-voltage resistance, chemical, UV and abrasion resistance, no cracking during dense winding and frequent bending.
• Easy Processing & Direct Soldering: 3UEW H wire allows direct soldering without enamel stripping, simplifying terminal processing and adapting to automated production.
• High Flexibility & Safety: Fine strand design fits compact winding and narrow installation spaces. Reinforced insulation ensures high voltage resistance and long service life.

Standard Applications

• New Energy Vehicles: OBC, DC-DC converters, vehicle high-power inductors
• AI Data Centers & Servers: High-current power modules, VRM inductors, resonant coils
• Medical Equipment: High-frequency surgical devices, high-voltage generators, precision winding parts
• Industrial Power: High-frequency transformers, UPS, PV inverters, induction heating devices
• High-end Electronics: RF coils and high-power high-frequency inductors

We provide flexible customization services, including bare/tinned/silver-plated copper conductors, custom insulation colors, spool packaging and special wire specifications for diverse application scenarios.

We are a professional manufacturer specialized in 3UEW H litz wire and ETFE extrusion technology. All products comply with RoHS and REACH standards with strict quality inspection. We deliver stable quality, fast lead times and customized solutions for global new energy and industrial customers.

Standard anti-dust & moisture-proof spool packaging (custom spool size available). 100% factory inspection, no broken wire, stable tolerance. Support OEM & bulk order.

• Q1: Why choose Multi-strand Litz wire?

  A1: Ultra-multi-strand design minimizes high-frequency impedance loss, greatly improves coil efficiency and Q value, ideal for professional high-frequency equipment.

• Q2: What is the working temperature?

  A2: Long-term working temp 180℃, short peak temp up to 200℃, stable insulation performance at high temperature.

• Q3: Can it be soldered directly?

  A3: Yes. Remove outer silk layer first, then the PU enamel can be directly soldered with fast and firm welding effect.

• Q4: Any winding & storage tips?

  A4: Avoid over tension and sharp bending. Store in dry & ventilated place to prevent copper oxidation and insulation aging.

• Q5: Can you provide customization?

  A5: Custom strand count, wire diameter, stranding direction and packaging are supported for prototype and mass production.