1. Classification:

1. Divided by appearance: Circular Electrical Connectors are used in military equipment (aviation and aerospace) due to their own structure; rectangular electrical connectors are more used for printed circuit boards of electronic equipment due to their simple structure. on.

2. According to the structure: according to the connection method: threaded connection, bayonet (quick) connection, card lock connection, push-pull connection, in-line connection, etc.; according to the contact body termination form: crimping, welding, winding; screw (Cap) fixed; according to environmental protection points: environmental resistance electrical connectors and ordinary electrical connectors.

3. According to the purpose: radio frequency electrical connectors; sealed electrical connectors (glass sealing welding); high temperature electrical connectors; automatic fall-off and separation electrical connectors; filter electrical connectors; composite electrical connectors; airport power electrical connectors; Electrical connectors for printed circuit boards, etc.

2. Electrical connector structure:

The electrical connector is composed of a fixed-end electrical connector (hereinafter referred to as a socket) and a free-end electrical connector (hereinafter referred to as a plug). The socket is fixed on the electrical component through its square (circle) plate (individually also by welding), the plug is generally connected to the cable, and the plug and socket are connected through the connecting nut.