0.04mm Copper Magnet Wire For Motor Hearing Aid Voice Coils

Price Negotiable

Price: Negotiation

MOQ: 5kg

Delivery Time: 2-15 days

Brand: Ruiyuan

Product Description

0.04mm Copper Magnet Wire For Motor Hearing Aid Voice Coils

Ultra-fine 0.04mm copper magnet wire specifically engineered for precision applications including motor hearing aid voice coils and miniature electronic components.

Diameter Specifications and Applications

0.02mm - 0.04mm (20μm - 40μm): Ultra-fine range for premium hearing aid voice coils, miniature medical implant probes, and ultra-high-density research coils. Requires specialized winding equipment.
0.05mm - 0.07mm (50μm - 70μm): Standard ultra-fine wire for high-end TWS earphone voice coils, miniature inductors, and RF transformers. Essential for consumer electronics miniaturization.
0.08mm - 0.09mm (80μm - 90μm): Fine wire for small speaker voice coils, power inductors, and relays. Optimizes performance and winding efficiency.

Quality Test Results

Test Item	Requirements	1st Sample	2nd Sample	3rd Sample
Appearance	Smooth & Clean	OK	OK	OK
Conductor Diameter	0.040mm ± 0.001mm	0.0400	0.0400	0.0400
Thickness of Insulation	≥ 0.006 mm	0.0090	0.0100	0.0090
Overall Diameter	≤ 0.052 mm	0.0490	0.0500	0.0490
DC Resistance	≤ 14.433 Ω/m	13.799	13.793	13.785
Elongation	≥ 11%	18	20	19
Breakdown Voltage	≥ 325 V	989	1302	1176
Pin Hole	≤ 5 faults/5m	0	0	0
Adherence	No cracks visible	OK	OK	OK
Cut-through	230℃ 2min No breakdown	OK	OK	OK
Heat Shock	200±5℃/30min No cracks	OK	OK	OK
Solderability	390±5℃ 2 Sec No slags	OK	OK	OK