1. It is divided into external connector and internal connector according to the nature of use.
2. According to the processing method, it is divided into pressing type and crimping type, which are also called puncturing type, welding type and zero insertion type.
3. Divide line to board connector, board to board connector, line to line (air connection) connector, socket, input and output connector according to the use mode.
4. It is divided into PCB board connector, flat cable connector, coaxial cable connector, embedded connector, compression shaft connector, circular connector, angular connector and connector for printed wiring board.
5. According to the structure, it is divided into general connector, moisture-resistant and waterproof connector, environment-resistant connector, air tight connector, fire-resistant connector and water-resistant connector.
