1. An electronic connector provides a separable connection between two subsystems in an electronic system without unacceptably affecting the performance of the system.
2. Separability is the reason why we want to use connectors, which is convenient for the maintenance and upgrade of subsystems or parts of a system. At the same time, this connection cannot have any unacceptable impact on the performance of the system. Such as signal absorption, attenuation, power loss. The requirements for separable and unacceptable limits depend on the specific application requirements of the connector.

3. From the structural definition, the connector has four structural elements, which are: A, the contact interface B of the terminal (between), the surface treatment of the terminal C, the reed D of the terminal, and the shell of the connector.
The reliability of the connector can be considered in the following factors:
1. Materials for product design and product manufacturing
2. Operating environment
3. The environment that can be used, especially temperature, humidity, and corrosiveness, determines that those failure mechanisms will work, and the functional requirements of the connector determine what degree of failure is allowed.