色老头在线视频免费观看_av在线不卡观看免费观看_婷婷五月六月综合缴_综合av中文字幕电影

Connector pin/mother:
Temperature resistance the maximum connector operating temperature of 200 c (except for the handful of high temperature special connector), the minimum temperature of-65 degrees centigrade. Because the connector work, electrical current generates heat at the point of contact, resulting in temperature rise, it is generally believed that the operating temperature should be equal to the environment temperature and temperature rise of contacts and. In some specifications, clearly sets out the connectors at nominal operating current the maximum temperature rise allowed.
Moisture intrusion of moisture will affect connections h insulation, and corroded metal parts. Constant hot and humid test conditions relative humidity 90%~95% (according to the product specification, up to 98%), temperature +40 ± 20 ° c, test time required by the product, a minimum of 96 hours. Alternating damp heat test is more stringent.
Salt-fog resistance of the connector when working in an environment containing moisture and salt, its metal structure, contact corrosion is likely to produce electro-chemical surface treatment, affected the physical and electrical properties of the connector. In order to evaluate the ability of electrical connectors withstand such an environment provides salt spray test. It is the connector hanging inside the temperature-controlled test chambers, using prescribed concentrations of sodium chloride solution spray with compressed air to form a salt spray atmosphere, its exposure time is determined by the product specification states that at least 48 hours. About vibration and shock resistant to vibration and shocks are important properties of electrical connectors, in special environments such as aviation and aerospace, rail and road transport is particularly important, which is test electrical connectors mechanical robustness and electrical contact reliability an important indicator. In the relevant test methods are clearly defined. Impact test should be provided in peak acceleration and shock pulse duration, as well as the electrical continuity of time