We know that the terminal connector is indispensable for conducting current or signal in the device. Why use the plating process for the connector terminals? The TXGA connector tells you why the terminals are plated?
1、anti-corrosion, anti-oxidation (such as plated nickel, chromium, zinc, etc.)
Generally, the terminal materials are copper, iron, etc., which are easily oxidized in the air. After plating a metal with strong anti-oxidation ability, the corrosion resistance of the terminal can be improved, and the current and signal conduction performance can be ensured.
2、enhance the conductivity (such as plated gold, silver, etc.)
The conductivity of the original material such as iron and phosphor bronze is usually below 20%. When the connector with low impedance requirements cannot meet the requirements, it is necessary to reduce the impedance after plating high-conductivity metal such as gold on the surface.
3、enhance plating adhesion (such as plated copper)
For metals with poor adhesion, a copper substrate is usually used to enhance adhesion before plating.
4, improve solderability (such as plated gold, tin, etc.)
Because the original material has poor adhesion to tin, the surface is plated with a certain thickness of tin and the like to improve the solderability of the part.
5, beautiful (such as plated gold, silver, nickel, etc.)
After plating, the terminal metal usually has a more lustrous and brighter appearance than the material, and looks more beautiful.