1. According to the appearance: circular electrical connector, rectangular electrical connector. Circular electrical connectors are the most used in military equipment (aeronautics and aerospace). Rectangular electrical connectors are mostly used on printed circuit boards of electronic devices.
2. According to the structure:
According to the connection method: threaded connection, bayonet (quick) connection, card lock connection, push-pull connection, direct plug-in connection, etc.;
According to the contact body termination form: crimping, welding, winding; screw (cap) fixing;
Classified by environmental protection: environment-resistant electrical connector and ordinary electrical connector
3. According to the purpose: sealed electrical connectors, high temperature electrical connectors, separate electrical connectors, filter electrical connectors, power electrical connectors.
