9 pin 183079-1 Wiring Cable Harness Automobile Connector Housing 1.0 Series

The material of the connector insulation is generally selected from PA66, PBT, ABS, PC, etc. Brass, phosphor bronze, beryllium copper, etc. are generally used as the contact material, but copper-nickel-silicon is the most commonly used material abroad. Connector shell materials are generally divided into two types: plastic and metal.

Regarding how to choose plastic material or metal material, there are generally the following reference points:

 1. Lightweight

 Due to the demand for lightweight vehicles, especially passenger car manufacturers will try their best to choose plastic connectors to control the weight of the vehicle under the premise of satisfying product performance.

 2. Product use environment

Because the mechanical strength of metal materials is better than plastics. Therefore, in some harsh environments, metal connectors are more suitable. For example, special vehicles, muck trucks, and unprotected electrical connection parts when the whole vehicle is arranged. At this time, the metal material is slightly better than the plastic material connector in terms of environmental impact and mechanical strength.

 3. Shielding implementation

For shielded connectors, since the shell of the metal connector itself is used to conduct shielding, it forms a carrier for shielding protection. In general, metal connectors are easier to achieve better shielding performance than plastic connectors, and the shape and structure are more compact.

(1) Use position: As the name implies, it is the application position of the connector on different high-voltage electrical appliances of the whole vehicle, and the connector is selected.

(2) Rated voltage: The maximum voltage at which electrical equipment (including power consumption and power supply equipment) can work stably for a long time.

The rated voltage is proportional to the creepage distance & clearance.

In other words, the higher the rated voltage requirement, the larger or longer the connector. Creepage distance & clearance design standard according to GBT 16935.1 (IEC 60664-1), 

(3) Rated current: The rated current of electrical equipment refers to the maximum current allowed to pass for a long time when the heat generation does not exceed the allowable temperature for long-term heat generation under the standard ambient temperature and rated voltage working conditions. 

For electric vehicles, P=UI, the rated current is determined according to the power P of the electrical equipment and the output voltage U.

Peak current: The maximum current value generated by the electric vehicle at the moment of rapid acceleration, climbing, and overload. 

The current-carrying cross-sectional area is proportional to the rated current of the connector. In other words, the larger the cross-section of the pin/hole/wire, the greater the current it can pass, and the larger the connector.

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