ETFE(namely ethylene tetrafluoroethylene) is one type of Teflon, featuring outstanding mechanical toughness and electrical stability and is used very often to make extrusion litz wire for its material characteristics with thermal class 155℃, among fluoropolymers, it also offers higher tensile strength and stiffness than PTFE, PFA, or FEP.
Comparing to served litz wire and taped litz wire, ETFE extruded litz wire forms a continuous and seamless protection jacket which keeps the enameled copper wire inside from ambient moisture, and has a solid and fixed overall structure. As a material extruded on the enameled copper wire, ETFE layer thickness can normally be 1, 2, 3 in terms of particular applications but mostly triple insulated. The conductor can normally be both solid and litz type.
Solderability
Pairing ETFE extrusion layer with enameled copper wire NEMA MW79C, MW82C with polyurethane enamel, ETFE triple insulated litz wire can be soldered directly under around 450℃ smoothly and no slags, with no need to peel off insulation layer. This helps saves lots of processing time for mass production.
When should you use a ETFE extruded litz wire?
ETFE extruded Litz wire is often chosen when you need wire to have performances of high-frequency performance, mechanical toughness, and environmental resistance. Such as hf transformers, inductors, compact modules in highfrequency power electronics, one key area is for modern vehicles, super for on-board chargers(OBC), DC-DC converters, traction motors, etc. For winding applications, ETFE litz wire improves flex life compared with other Litz constructions. The ETFE layer also provide high dielectric strength and good resistance to oil, grease, and chemicals.
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Post time: Nov-02-2026
