Analysis and Solutions of Common Failures of Electrical Connectors

At present, the application of electrical connectors in life has become more and more extensive. Because this kind of device is relatively small, the design is more precise, various failures may appear in use too. For some common failures, we also need to analysis and figure out solutions.

1. The working temperature of the electrical connectors

At present, the maximum working temperature of the connector is 200°C (except for those high-temperature electrical connectors), and the minimum temperature is -55°C. When the electrical connector is working, the current generates heat at the contact point, resulting in a temperature rise. Therefore, it is generally believed that the working temperature should be equal to the sum of the ambient temperature and the temperature rise of the contact point. In some specifications, the maximum temperature rise allowed by the electrical connector under the rated operating current is clearly specified.

2. Humidity resistance of electrical connectors

The intrusion of moisture will affect the connection and insulation performance, and rust metal parts.

3. Salt spray resistance of electrical connectors

When the electrical connector is working in an environment containing moisture and salt, the surface treatment layer of its metal structure and contact may produce galvanic corrosion, which affects the physical and electrical properties of the connector.

4. Vibration and shock of electrical connectors

Vibration and shock resistance is an important performance of electrical connectors. It is particularly important in special application environments such as aviation and aerospace, railway and road transportation. It is an important indicator for testing the robustness of the electrical connector's mechanical structure and electrical contact reliability.

Other environmental performance according to the requirements of use, other environmental performances of the electrical connector include airtightness (air leakage, liquid pressure), liquid immersion (resistance to specific liquids) and low air pressure.