What is the difference between metal and plastic housings for waterproof connectors?

Waterproof connector is generally composed of metal contact conductor and shell metal. Waterproof connector metal and plastic shell difference 1, mechanical life: waterproof connector mechanical life parameters that is the number of times the connector is inserted and removed, usually the industry will be standardized to locate 500 ~ 1000 times. In the aviation connector insertion and extraction times to reach this interval, waterproof connector contact resistance, insulation resistance and withstand voltage and other indicators may not exceed the specified standard values, this parameter, metal and plastic shell gap is not large. 2, electrical performance: waterproof connector electrical performance refers to the rated voltage, rated current, contact impedance, insulation resistance, metal and plastic shell without gap. 3, environmental parameters: environmental parameters refers to the ambient temperature, humidity, ambient temperature rise, atmospheric pressure and corrosive gases, etc., if the use of waterproof connectors in harsh environments, you can choose the appropriate metal shell connector. 4, termination mode: termination mode that is the waterproof connector male and female connector hardware contacts and wire connection, metal shell and plastic shell is not much difference. Plastic shell cost is relatively low, the price is more reasonable, please choose according to the actual use of discretion.

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