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Related factors affecting the life of pogo pin connectors.micro pogo pins

source:pogo pin release time:2022-04-27 Article author:yu Popular:POGO PIN

  

  In this hot summer, we should pay more attention to the safety of the details of life. The first thing we need to know is the life of the signal pin connector: the mechanical life of the PogoPin pogo pin connector refers to the plug-in life, and the circular metal plug-and-pull charging pin connection The device is usually specified as about 5000 times. When reaching the specified mechanical life, the contact resistance, insulation resistance and withstand voltage of the signal pin connector should not exceed the specified values. Strictly speaking, the current mechanical life is a vague concept. The mechanical life should have a certain relationship with time. Obviously, the situation is different when it is used up 500 times in 10 years and 500 times in 1 year. It's just that there is no more economical and scientific way to measure it.

  First, the number of contact pairs can be selected according to the mechanical life of the circuit pogopin connector, and the volume of the pogopin pogo pin connector and the total separation force should be considered. The larger the number of contact pairs, the larger the volume and the larger the total separation force. In some cases where the reliability is high and the volume is allowed, the method of connecting two pairs of contact pairs in parallel can be used to improve the reliability of the connection.

  In the plug and socket of the pogopin connector, the pins (male contacts) and jacks (female contacts) can generally be assembled interchangeably. In actual use, it can be selected according to the live condition of both ends of the plug and socket. If the socket needs to be charged frequently, you can choose a socket with a jack, because the live contact of the socket with a jack is buried in the insulator, and it is not easy for the human body to touch the live contact, which is relatively safe.

  The main consideration is the electrical continuity of the contact pair of the pogopin connector during vibration, shock and collision under the specified frequency and acceleration conditions. The contact pair will open instantaneously under this dynamic stress condition. The specified transient time is generally 1μs, 10μs, 100μs, 1ms and 10ms. The thing to pay attention to is how to judge the momentary failure of the contact pair. It is now generally believed that when the voltage drop across the closed contact pair (contacts) exceeds 50% of the power supply electromotive force, it can be determined that the closed contact pair (contacts) fails. That is to say, there are two conditions for judging whether an instantaneous interruption occurs: duration and voltage drop, both of which are indispensable.


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