What are the coating materials for pogo pin connectors?

　　After the pogo pin connector is processed by a precision CNC machine tool, in order to improve the electrical conductivity, wear resistance, welding strength, oxidation resistance, corrosion prevention and other purposes of the pogo pin, it is necessary to put on it. Piece protective sleeve - "electroplating"; today I will introduce the characteristics of different electroplating materials and the properties of electroplating materials for pogo pin connectors.

　　pogo pin

　　tin

　　Three types of tinning: pre-tinning; pre-cladding; electroplating.

　　The characteristics of tin: tin is relatively soft, protective against corrosion, relatively cheap, easy to solder, the thickness of the coating is 2-12μ

　　Color: Silvery white, dark or glossy.

　　Brass or bronze tinned can withstand temperatures up to 110 degrees, and steel tinned up to 190 degrees.

　　gold

　　Gold electroplating is the best coating method for electrical contacts. It is soft, corrosion-resistant, insoluble in pure acid, has good electrical conductivity, and is expensive. Therefore, the selective gold-plating process is more reasonable, that is, only in the meshing range. Gold plated.

　　Gold plating usually chooses nickel plating first to achieve better anti-corrosion effect.

　　The thickness of gold plating is generally

　　palladium

　　The precious metal palladium is used in electroplating instead of gold to some limited extent, AMP only uses palladium in the metal solder layer (hard gold method)

　　Palladium is less conductive than gold.

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