How To Choose The Car Harness Connector?

Automotive wiring harness connectors are important connecting components for the various connection points of automotive circuits. Its quality is good or bad, directly affecting the transmission of electricity or signals. Therefore, the selection of a suitable connector is of great significance for ensuring the reliability of the vehicle line.

Selection principle of connectors

According to the basic performance of the connector, the selection of the connector needs to be considered in terms of electrical performance and mechanical properties.

Electrical performance

The connector is the basic component that connects the electrical circuit of the car. Therefore, the electrical parameters of the connector itself are the first considerations when selecting the connector. Electrical performance is divided into three aspects: rated voltage, contact resistance and insulation performance.

a, rated voltage

The rated voltage is also called the working voltage and the rated voltage of the connector. The rated voltage provided by the connector manufacturer is the maximum operating voltage of the connector. For low voltage connectors, the voltage supplied by the manufacturer is typically 50 V. In general, the connector works well below the rated voltage.

The influencing factors are: the insulator material used in the connector, the spacing between the conductive terminals, and the like.

b, contact resistance

The contact resistance directly affects the signal transmission and electrical connection of various electrical equipment of the automobile, and affects the working stability and reliability of each electrical equipment.

The influencing factors are: terminal material, terminal contact interface geometry, terminal positive force, and terminal contact interface surface state.

c, insulation performance

The insulation performance of the connector is also an important electrical property. The parameters reflecting the insulation properties of the insulation resistance and dielectric strength are the most basic electrical parameters to ensure reliable operation of the connector.

The influencing factors are: material, temperature, humidity, chemical test solution, dust, etc.

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