How to choose the right connector for PCB?

A PCB is a board of non-conductive material on which conductive wires are printed or etched. Electronic components mounted on the board are connected by lines to form a working circuit. The effectiveness of PCB design is the key to the performance of equipment, and there are many parameters that can affect the efficiency of PCB.


The smaller package size reduces costs, simplifies PCB design, and reduces transmission losses for point-to-point connections. Smaller terminal spacing leads to smaller connectors and, in turn, smaller board and backplane sizes.

For example, the parallel mounting spacing of the female connector head can be reduced, and the small size of the female package can help reduce the connector size.

Data rates have exploded, and signal loss during insertion is now critical. The internal structure and the terminal of the connector play an important role in improving the signal strength and reducing insertion loss. Enhanced ventilation and improved channel impedance can also enhance the signal interface.

Shielding electromagnetic interference (EMI) and electrostatic discharge (ESD) is an important step to improve data rate. Special installation and termination mechanism ensures protection against EMI and ESD. This is the point to consider when choosing a connector for a PCB.

It is necessary for the cable to be properly connected to the transmission point of the connector to overcome the signal loss. A variety of connectors integrate wire terminal units and cable clips into a single plug housing. Some PCB connectors are equipped with preloaded springs to help prevent accidental cable removal.