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Environmental influence on probe connector

Issuing Time:2020-09-24Release:SHENZHEN ZHongZHengTian Technology Co., Ltd.

Temperature resistance-the current maximum working temperature of the connector is 200℃, and the lowest temperature is -65℃. When the connector is working, the current generates heat at the contact point and causes 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 connector under the rated operating current is clearly specified.

  

Moisture resistance-the intrusion of moisture will affect the insulation performance of the connection and rust metal parts. The constant heat and humidity test conditions are relative humidity 90%~95%, temperature +40±20℃, and the test time is as specified by the product, at least 96 hours. The alternating damp heat test is more stringent.

  

Salt spray resistance-when the connector is working in an environment containing moisture and salt, the metal structure and the surface treatment layer of the contact may produce electrochemical corrosion, which affects the physical and electrical properties of the connector. In order to evaluate the ability of electrical connectors to withstand this environment, a salt spray test is specified. It hangs the connector in a temperature-controlled test box, sprays out a sodium chloride solution of a specified concentration with compressed air to form a salt spray atmosphere, and the exposure time is specified by the product specification, at least 48 hours.

  

Vibration and shock-resistance to vibration and shock is an important performance of electrical connectors. It is especially important in special application environments such as aviation and aerospace, railway and road transportation. It is to test the robustness and electrical contact of electrical connectors. An important indicator of reliability. There are clear regulations in the relevant test methods. In the shock test, the peak acceleration, duration and shock pulse waveform, as well as the interruption time of electrical continuity should be specified.


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