Basic performance of connectors
Time： 2022-11-22 17:47
The basic performance of connectors can be divided into three main categories: mechanical properties, electrical properties, and environmental properties. Another important mechanical property is the mechanical life of the connector. Mechanical life is actually a durability index, which is called mechanical operation in national standard GB5095. It is based on one insertion and one withdrawal as a cycle, and the ability of the connector to normally complete its connection function (such as contact resistance value) after the specified mating cycles is used as the judgment criterion.
1. Mechanical Properties. Regarding connection function, insertion and extraction force is an important mechanical property. Insertion and extraction force is divided into insertion force and withdrawal force (withdrawal force is also called separation force), and the requirements for both are different. Relevant standards specify maximum insertion force and minimum separation force, which indicates that, from a user perspective, the insertion force should be small (hence the structures with low insertion force LIF and zero insertion force ZIF), while if the separation force is too small, it will affect the reliability of the contact. The insertion and extraction force and mechanical life of connectors are related to the contact structure (normal pressure), the quality of the plating on the contact area (sliding friction coefficient), and the dimensional accuracy of the contact arrangement (alignment).
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