Why are the pins of heavy-duty connectors plated and what is the difference between gold and silver plating?

Heavy-duty connector pins will generally choose gold-plated or silver-plated process processing, heavy-duty connector pin material is generally a copper alloy, under the action of water, will be in contact with oxygen to produce oxidation reaction. The air contains a certain amount of water vapor, if there is no plating, the copper alloy surface will be oxidized with the reaction of water in the air. Heavy-duty connector pin pins gold and silver plating difference Advantages of gold plating: the surface hardness of gold is stronger than silver, more resistant to insertion and removal; Disadvantages of gold plating: higher cost. Advantages of silver-plated: silver can enhance the current-carrying capacity of the pin, and cheaper; silver-plated disadvantages: not corrosion-resistant, not resistant to plugging. Choose silver-plated or gold-plated treatment of heavy-duty connectors, need to be based on the actual application scenarios, signal transmission, choose gold-plated treatment, because it needs to be frequently plugged and unplugged. Electrical connection, infrequent plugging and unplugging, but high current-carrying requirements, it is recommended to choose silver-plated treatment of heavy-duty connectors.

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