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Three commonly used electroplating methods for crown spring pin jacks.Elastic electrode

source:Industry News    Popular:pogo pin for moilble phone     release time:2021-12-29 11:04:27     Article author:sznbone

  Three commonly used electroplating methods for crown spring pin jacks.Elastic electrode(图1)

  1. Crown spring pin sockets are tin-plated

  For general connector pin jacks, tin plating is the most common, because tin is relatively cheap, but the texture of tin is relatively soft, in order to ensure good contact, a higher contact force (at least 100 grams) is required, and the number of insertions and removals is average. It is relatively low and can only play a simple protective anti-corrosion effect. The working temperature is relatively low. The working temperature of brass or bronze tin plating can reach 110°C, and the tin plating of steel can reach 190°C.

  1, crown spring pin sockets are gold-plated

  For connector pin jacks with high mating cycles, gold plating is generally required. For the small signal connector pin jacks with high reliability requirements, and applications that require small contact forces, gold plating is generally used, and the corrosion resistance of gold is also very prominent.

  2, crown spring pin sockets are nickel-plated

  For higher operating temperatures, other coatings are needed, for example, copper plating with nickel up to 340°C, brass or bronze with nickel plating up to 250°C. Nickel is generally used as a gold-plated bottom layer, and most of the steel contacts are nickel-plated (copper must be plated first). The conductivity of palladium is worse than that of gold, and it is often used to replace electroplated gold in some limited areas. At present, the price of gold continues to rise, and more and more products are plated with palladium-nickel alloy. Silver-plated contacts have very good electrical conductivity, but silver is easily oxidized, so it is only used in special circumstances.


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