What are the requirements for connector performance in different application environments?

The use of the connector environment has a great impact on the performance of the main factors are temperature, humidity, acid and alkali, vibration and shock and liquid impregnation, etc., these factors also affect the connector's work as well as life. The environmental performance of the connector mainly includes the following items: First, the temperature of the current connector operating temperature of 200 ℃ (except for a few high-temperature special connectors), the low temperature of -65 ℃. As the connector works, the current at the point of contact to generate heat resulting in temperature rise, so it is generally believed that the operating temperature should be equal to the ambient temperature and contact temperature and the sum of the temperature. In some specifications, it is specified that the connector in the rated operating current under the allowable temperature rise. Second, the intrusion of moisture moisture will affect the connector insulation properties, and corrosion of metal parts. Constant temperature and humidity test conditions for the relative humidity at 90% ~ 95% (according to product specifications, up to 98%), temperature +40 ± 20 °, the test time according to the product specification for a minimum of 96 h. Alternating humidity and heat test is more stringent. Third, salt spray Connectors in the environment containing moisture and salt work, its metal structure, contact surface treatment layer may produce galvanic corrosion, affecting the physical and electrical properties of the connector. In order to evaluate the ability of the connector to withstand this environment that provides for the salt spray test. It is the connector suspended in a temperature-controlled test chamber, with a specified concentration of sodium chloride solution with compressed air spray to form a salt spray atmosphere, the exposure time according to product specifications, the test time of at least 48h. four, vibration and shock resistance Vibration and shock resistance is an important connector performance, in special applications such as aviation and aerospace, railroads and highway transportation is particularly important, it is to test the connector's mechanical It is to test the connector's mechanical robustness and contact parts of the reliability of the important indicators. In the relevant test methods have clear provisions, impact test should be specified in the peak acceleration, duration and impact pulse waveform and electrical continuity interruption time. Fifth, other environmental performance. According to the use of requirements, the connector's other environmental performance and sealing (air leakage, liquid pressure), liquid impregnation (on the specific liquid resistance to malodorization ability) and low air pressure. (For example, waterproof connectors.) Because of the different applications and environments, the connector's shape and structure are not the same. In any case, connectors must be able to maintain the continuity and reliability of the current of the connected components. To achieve this, the environmental performance of the connector must be thoroughly analyzed, and the right connector must be applied to the right electronic device.

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