The basic performance of the connector

Environmental performance common environmental performance includes temperature resistance, humidity resistance, vibration resistance and impact resistance.

① At present, the working temperature of the connector is 200 ℃ and the temperature is - 65 ℃. When the connector works, the current generates heat at the contact point, resulting in temperature rise. Therefore, it is generally believed in the pin layout drawing that the working temperature should be equal to the sum of the ambient temperature and the temperature rise at the contact point. In some specifications, the allowable temperature rise of connector under rated working current is specified.

② The invasion of moisture resistance will affect the insulation performance of the connection h and rusty metal parts. According to the product regulations, the constant humidity and heat test conditions are relative humidity 90% ~ 95%, temperature + 40 ± 20 ℃, and the test time is at least 96 hours. The alternation of damp and heat is more serious.

③ When the salt spray resistant connector works in the environment containing moisture and salt, electrochemical corrosion may occur on the surface treatment layer of metal structures and contacts, which may affect the physical and electrical properties of the connector. In order to evaluate the ability of electrical connector to withstand this environment, salt spray test is specified. The connector is suspended in the temperature control test box to form a salt spray environment. The exposure time of pin type is at least 48 hours as specified in the product specification.

(4) Vibration and shock anti vibration and shock is an important performance of electrical connector, and it is also an important index to test the mechanical structure firmness and electrical contact reliability of electrical connector. The relevant test methods are specified. Peak acceleration and electrical continuity interruption time shall be specified in the impact test.

⑤ Other environmental performance according to the use requirements, other environmental performance of electrical connector includes sealing performance and low air pressure.