​What are the basic performance of PCB connector

What are the basic performance of PCB connector?

Connector is a detachable component (except an adapter) that is usually install on a cable or device for system data transmission or electrical connection, which means connecting two source devices to transmit signals or current. Yeahui introduces you to the basic performance of PCB connectors. The basic performance of PCB connectors can be divided into three main categories:

1.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, and the requirements of this two parts are different. There is a maximum insertion force and a minimum separation force specification in the relevant standards, which indicates that the insertion force is small , but if the separation force is too small, and the reliability of the contact may be affected. Mechanical life is actually a durability indicator, which is called mechanical operation in GB5095. It is a cycle of one insertion and one extraction to judge whether the PCB connector can complete its connection function normally after the specified insertion and extraction cycle. The insertion and extraction force and mechanical life of the PCB connector are related to the structure of the contact, the quality of the coating at the contact site, and the dimensional accuracy of the contact arrangement.

2.Electrical properties

The main electrical properties of PCB connectors include contact resistance, insulation resistance and electrical strength. High quality electrical PCB connectors should have low and stable contact resistance. The contact resistance of PCB connectors ranges from a few milliohms to tens of milliohms. Insulation resistance is an indicator of the insulation properties between PCB connector contacts and between the contacts and the housing. It ranges from hundreds of megaohms to several gigaohms. The electrical strength is a measure of the ability to withstand the rated test voltage between the PCB connector contacts or between the contacts and the housing.

3. The environmental properties

For RF coaxial PCB connectors, There are also have electrical indicators such as characteristic impedance, insertion loss, reflection coefficient, and voltage standing wave ratio. Due to the development of digital technology, in order to connect and transmit high-speed digital pulse signals, a new type of PCB connector, namely high-speed signal PCB connector has appeared in the market. Accordingly, in electrical properties, in addition to characteristic impedance. some new electrical indicators have appeared such as crosstalk, transmission delay, time lag, etc.

Above is some relevant contents about PCB connector properties. We hope that through the above content, you can further understand PCB connectors.You can learn more about connectors from the article(When do I need an obd connector).