Tinned copper wire (barrel)
Basic information：
File number: CST-W-003
Brand: Qinsun
Core wire material: 99.99% copper
Main features: bright appearance, uniform color, strong adhesion of tin layer, high oxidation resistance
Main uses: wires and cables, electronic pins (leads) of electronic components, PCB board connection jumpers (jumpers)
Compliance standards: SJ2422-83 Tinned copper wire standard for electronic components
| No. | Item | Characteristics |
|---|---|---|
| 1 | Appearance | The surface is bright and evenly colored, with no tin peeling, black spots, cracks, burrs, yellowing, tin tumors, or other abnormalities. |
| 2 | Specification |
|
| 3 | Tin Plating Thickness | Thin plating: 1.5-2.5μm; Medium plating: 2.5-4.0μm; Thick plating: above 4μm. |
| 4 | Elongation | ≥15% (or as required by the customer). |
| 5 | Repeated Bending | ≥4 times. |
| 6 | Tensile Strength | ≥245MPa (or ≥245KG/mm², note the unit conversion, but here it remains as the original). |
| 7 | Solderability | At 250±2℃, lead-free tin dipping for 2±0.5s, with new tin adhering to over 95% of the surface. |
| 8 | Aging Test | After baking at 200±5℃ for 1 hour, there is no yellowing or blackening. |
| 9 | Continuity | After three cycles of testing with hydrochloric acid and sodium polysulfide solution, there is no copper exposure or black spots. |
| 10 | Adhesion | After winding more than 6 turns and immersing in saturated sodium polysulfide, there are no cracks or blackening. |
Packaging Methods：
Rubber Shaft Packaging: Divided into small rubber shaft (3-5kg), medium rubber shaft (12-18kg), large rubber shaft (25-30kg)
Rubber Drum Packaging: 15-25kg
Paper Tube Packaging: 18-25kg
Product Introduction:
Tinned copper wire has the characteristics of bright appearance, uniform color, strong adhesion of tin layer, and high oxidation resistance. It is an indispensable conductive material in the fields of wires and cables, electronic components, etc.
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