Tin Plated Copper | Cu With Sn Coating For Connector Component Usage
Description :
Copper alloy strip used for connector components is often supplied with a tin coating. Tin offers corrosion protection, preserves solderability, and provides a better contact surface than bare copper metals. Tin plated strip is readily available from both metal producers and independent platers. Basically, tin coatings are produced by either dipping the strip metal in molten tin or by an electrolytic or plating process. The tin applied in a molten bath can be mechanically wiped smooth and is defined as "Commercial Hot Dipped Tin" (HDTc). Or it can be wiped by an air jet; defined as "Air Leveled Tin" (ALT). Electroplated tin, called "Electrotinned" (ESN), products can be heated to remelt the tin surface and thus produce a derivative product called "Reflow Tin" (Reflow).
Structure:
|
Material |
Thickness (%) |
|
Sn | Cu | Sn |
3~4% | 92~94% | 3~4% |
Why Use Tinned Copper?
If you’re in the market for copper, you’ve probably noticed a lot of ads or shops carrying tinned copper. So what exactly is the benefit of tinned copper as opposed to bare copper ?
Benefits of tinned Copper:
Tin is a useful plating for copper because it not only helps to boost copper’s properties, it also helps the wire to last much longer than it would normally.
Specification:
|
Item |
Unit |
Size |
||||
|
Thickness |
mm |
>0.01 |
0.02 |
>0.05 |
>0.1 |
>0.15 |
|
Width |
mm |
3-300 |
1-320 |
1-320 |
1-190 |
4-190 |
|
Thickness tomerance |
|
±10% |
±10% |
±10% |
±10% |
EN1652 |
|
Width tolerance |
|
EN1652 |
||||
|
Strip lengths³[kg/mm] |
|
Dependent on thickness and width |
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