Basic performance of the connector

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

Mechanical behavior

Mechanical properties In terms of the connection function, the insertion force is an important mechanical property. The insertion force is divided into the insertion force and the extraction force (the extraction force is also called the separation force), and the requirements of the two are different. There are maximum insertion force and minimum separation force regulations in the relevant standards, which indicates that the insertion force is small from the point of view of use (thereby having a low insertion force LIF and a structure without ZIF insertion), and if the separation force is too small, It will affect the reliability of the contact.

Another important mechanical property is the mechanical life of the connector. Mechanical life is actually an indicator of durability, which is called mechanical operation in GB5095. It takes one insertion and one extraction as one cycle to judge whether the connector can complete its connection function (such as contact resistance value) after the specified insertion and removal cycle. The insertion force and mechanical life of the connector are related to the plating quality (sliding friction coefficient) of the contact structure (positive pressure) contact portion and the dimensional accuracy (alignment) of the contact arrangement.

Electrical performance

The main electrical properties of electrical performance connectors include contact resistance, insulation resistance and electrical strength.

1 Contact resistance High quality electrical connectors should have low and stable contact resistance. The contact resistance of the connector ranges from a few milliohms to tens of milliohms.

2 Insulation resistance is an indicator of the insulation performance between electrical connector contacts and between the contacts and the casing, in the order of hundreds of megaohms to several gigaohms.

3 Resistance to electric strength, or withstand voltage, dielectric withstand voltage, is the ability to characterize the rated test voltage between connector contacts or between contacts and housing.

Environmental performance

Environmental performance Common environmental properties include temperature resistance, moisture resistance, salt spray resistance, vibration and shock.

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Read more about the connectors(Overview of Military Standards for RF Cables and Connectors).