How many hardware terminal environment performance, you know?

1 and heat-resistant: currently, hardware terminal highest working temperature is 200 ℃, the minimum temperature for - 65℃。 Because of hardware terminals, current at the contact point to generate heat, cause the temperature rise, therefore generally think the working temperature should be equal to the sum of environmental temperature and junction temperature rise. Hardware terminal in some specification, specified in the rated power flow allows for the highest temperature rise. 2 moist air resistance: resistance to the invasion of the damp air will affect hardware terminal insulation performance, and the corrosion of metal parts. Constant humid heat test conditions for relative humidity of 95% ( According to the product specification, up to 98%) , temperature + 40 & plusmn; 20 ℃, the test time according to the provisions of the product for at least 96 hours. Alternating hot and humid test is more stringent. 3, salt fog resistance: hardware terminal in containing moisture and salt environment, its processing layer on the surface of the metal structure, contact may produce electrochemical corrosion, impact hardware terminal electrical and physical properties. In order to evaluate the hardware terminal's ability to tolerate this kind of environment, the salt spray test. It is hung connector in steel temperature controlled trials, the provisions of concentration of sodium chloride solution using compressed air, salt fog atmosphere, the exposure time prescribed by the product specification, at least 96 hours. 4 vibration and impact resistance, resistance to vibration and impact is one of the important performance, hardware terminal in special application environment, such as aviation and aerospace, railway and highway transportation is particularly important, it is the robustness for testing electric connector mechanical structure and electric contact reliability of important indicators. In the relevant test method has clear rules. 5 other environmental impact test performance: according to the requirement, hardware terminal other environmental performance and sealing ( Air leak, liquid pressure) , liquid impregnation ( Resistance of certain liquid vices ability) , depression, etc.