0.4 Mm Enamelled Copper Wire Winding Small Coil
0.4mm Enameled Copper Wire Copper Wire Winding Small Coil
0.4mm enameled copper wire is an important choice for high-frequency transformer and motor winding applications, demonstrating excellent electrical performance, thermal stability and ease of use. Its contribution to the efficient and reliable operation of electrical equipment is undeniable, and its role in advancing modern technology is also indispensable. As the demand for high-performance electrical components continues to grow, this enameled copper wire remains the cornerstone of innovation and progress in electrical engineering.
| Product |
0.4mm Enameled Copper Wire Copper Wire Winding Small Coil |
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Key word |
0.4mm Enameled Copper Wire Copper Wire Winding Small Coil |
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Test Item |
Unit |
Standard Value |
Reality Value |
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1st Sample |
2nd Sample |
3rd Sample |
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Appearance |
Smooth & Clean |
OK |
OK |
OK |
OK |
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Conductor Diameter |
0.400± |
0.004 |
0.400 |
0.400 |
0.400 |
OK |
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Thickness of Insulation |
≥ 0.025 mm |
0.032 |
0.033 |
0.032 |
OK |
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Overall Diameter |
≤ 0.437 mm |
0.432 |
0.433 |
0.432 |
OK |
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DC Resistance |
≤ 0.1400 Ω/m |
0.1345 |
0.1354 |
0.1343 |
OK |
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Elongation |
≥ 27 % |
31 |
32 |
30 |
OK |
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Breakdown Voltage |
≥ 2900 V |
4563 |
4132 |
3986 |
OK |
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Pin Hole |
≤ 5 Faults/5m |
0 |
0 |
0 |
OK |
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Continuity |
≤ 25 Faults/30m |
0 |
0 |
0 |
OK |
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Test Items |
Technical Requests |
Results |
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Adhesive |
Coating layer is good |
OK |
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Cut-through |
200℃ 2mins no breakdown |
OK |
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Heat Shock |
175±5℃/30min no crack |
OK |
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Solder Ability |
390± 5℃ 2Sec Smooth |
OK |
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