The crown spring terminal of the connector is also called the positioning claw and the claw structure. The feature of this structure is that the terminal will be installed in the groove floatingly, and the pin will be held by the elastic force of the internal claws of the crown spring structure when it is inserted, so as to realize multi-point contact with the pin. It has the characteristics of high reliability, soft pulling force, low contact resistance, shock resistance, impact resistance, etc. It is an ideal contact structure for connector jacks and sockets.
Crown spring terminals generally use brass or copper alloy raw materials. Gold or silver plating will be selected according to application requirements. Silver plating can effectively reduce terminal resistance and improve connector conductivity. The conductivity of gold plating is slightly inferior, but the properties are more stable, and the environmental resistance of the coating is better, and it is not easy to be corroded. The thickness of the plating on different types of terminals will also vary. Depending on the requirements, the coating can be as thin as 3μ'' and as thick as 3μm. Therefore, the terminals can be safely interconnected in high temperature (up to 350°C) and high current (up to several thousand ampere) environments.At present, crown spring terminals have been widely used in industry, energy, telecommunications, rail transit and other industries.
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