Connector performance

Basic performance

The basic properties of the connector can be divided into three categories: the mechanical, electrical and environmental performance.

Mechanical behavior

Mechanical properties on connectivity, the insertion force is important to mechanical properties. Plug into force insertion force and withdrawal force (pull-out strength also known as separation force), the two requirements are different. There are standards in the maximum insertion force and the predetermined minimum separation force, this indicates that, from the point of view of use, smaller insertion force (LIF thereby low insertion force and insertion force ZIF no structure), while if the separation force is too small, it will affect the contact reliability.

Another important mechanical properties are the mechanical life of the connector. Mechanical life is actually a durability (durability) indicators in the national standard GB5095 it called mechanical operation. It is the first time you insert and pull out of a cycle to cycle in the required plug connector can normally complete its connectivity features (such as contact resistance value) as the basis for evaluation. The insertion force connector and mechanical life of the contact structure (positive pressure size) contact with the coating quality parts (sliding friction coefficient) and the dimensional accuracy of contact arrangement (aligned degrees) related.

Electrical Performance

The main electrical performance electrical performance of the connector includes a contact resistance, insulation resistance and dielectric strength.

① contact resistance of high-quality electrical connectors should have a low and stable contact resistance. Connector contact resistance from a few milliohms to tens of milliohms range.

② insulation resistance performance indicators to measure the insulation between the electrical connector contacts and contact with the housing, on the order of several hundred to several thousand megohms megohms range.

③ said electric strength or resistance, voltage, dielectric strength is the ability to characterize the tolerance between the connector contacts or contacts with the housing rated test voltage.

Environmental performance

Common environmental performance environmental performance including temperature, humidity, salt fog, vibration, and shock.

① temperature and current connectors maximum operating temperature of 200 ℃ (except a few special high-temperature connector), the lowest temperature of -65 ℃. Since the connector is working, the current generates heat at the contact points, a temperature rise, it is generally considered to be equal to the ambient temperature and the temperature rise of the junction and. In some specifications, the connector specified in the rated current at the maximum allowable liters. ② moisture intrusion of moisture will affect the connection h insulation and corrosion of metal parts. Damp heat test conditions for a relative humidity of 90% to 95% (based on product specifications, up to 98%), the temperature of + 40 ± 20 ℃, according to the specified test time, a minimum of 96 hours. Damp heat test is more stringent. ③ Connector salt spray containing moisture and salt in the work environment, its metal structure, the contact surface treatment layer may produce galvanic corrosion, aff