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The components of the rectangular electrical connector system include: an insulator, a contact body, and a housing. The circular electrical connector assembly includes a housing, a contact portion and an insulating mounting plate. Electrical connector pins, connector sockets consist of three parts, a plug-in, and accessories. Receptacles for holding plug contacts, mating connectors. Accessories are used to secure the wires through threaded plugs to protect from the force, or to attach solder or threaded connections to sockets. The insulator consists of a pin insulator and a socket insulator. Interface sealing body, sealing body and other components. It is used to keep the pin socket at a set position, and to insulate the electrical equipment between each contact body and between each contact body and the casing structure. The sealing measures are obtained by the electronic insulator and the interface sealing body sealing body, so as to improve the environmental resistance system performance of the electrical connector. In order to meet product temperature, low temperature, flame retardant, part geometry to ensure stability and reliability. Use thermosets to form most insulators. Interface seals, cable closures are molded with silicone rubber molding, etc. The contact body of the pin of the electrical connector, the contact body includes the male contact and the female contact, sometimes called the pin jack, the connection management method can be divided into different welding type, crimping type, press-in type and wrapping type, etc. , used to realize the connection of the control circuit system. The pin jack is the key element of the electrical connector, which directly affects the reliability of the electrical connector. The pin jacks are mostly made of elastic copper alloy material with good electrical conductivity, and the surface is silver-plated to achieve the purpose of low contact resistance and corrosion resistance. Jacks generally include split socket jacks, wire spring jacks, crown spring jacks and punching jacks.

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