The phenomenon of electric spark in pogo pin connector is mainly caused by the interaction of poor contact, pre-charge and high voltage.

First of all, poor contact is an important cause of electric spark in pogo pin connector. When two connectors are butted, if there is dirt, oxide or other foreign matter on the surface of pogo pin or socket, these impurities may form a local high impedance area, resulting in poor contact. When the current passes through these high impedance areas, it will produce local high temperature, which will lead to electric spark. In addition, because the contact area between pogo pin and the socket is small, once the contact is poor, the current density per unit area will increase, which will easily lead to local high temperature and discharge, and then spark will occur.

Secondly, pre-charging is also one of the factors that lead to electric spark in pogo pin connector. In some cases, one of the connectors may have electrostatic charge. When the two connectors are docked, due to the influence of electrostatic charge, discharge may occur near the contact point, resulting in electric spark.

Finally, the high voltage environment may also cause electric sparks when pogo pin connectors are docked. In high voltage environment, when pogo pin contacts with the socket, corona discharge or breakdown discharge may occur, which may lead to electric spark.

In order to reduce or avoid the problem of electric spark when pogo pin connectors are docked, various measures can be taken. First of all, clean the connector regularly to ensure that the contact surface is clean and reduce the influence of pollutants; Secondly, the anti-corrosion layer is used to reduce the generation of oxides; Finally, in the process of design and use, we need to consider the control of static electricity and the protection of high-voltage environment to reduce the generation of electric sparks. Through these measures, the possibility of electric spark when pogo pin connectors are docked can be effectively reduced, and the reliability and safety of the connection can be improved.