The mechanical life of the pogo pin connector refers to the plugging life. The pogo pin connector is usually specified as about 5000 times. When the specified mechanical life is reached, the contact resistance, insulation resistance and withstand voltage of the pogo pin connector should not exceed the specified value. .Strictly speaking, the life of the current pogo pin connector is a vague concept. The life of the pogo pin connector 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. . Just there is no more economical, more scientific way to measure it.
Ensure that the pogo pin connector stretches vertically on the device, does not pass current, and ensures that the device is clean and dry, etc. The friction of the pogo pin connector at work and various corrosive materials in the working environment will greatly reduce the use of the pogo pin connector. life.
At present, the mechanical service life of the pogo pin connector can reach 100w times, but this is not the actual service life, but the mechanical service life of the spring. It is usually recommended to replace the thimble after 30W. Since the thimble is gold-plated inside, the gold-plated layer is used for a long time. It will fall off. The most direct manifestation is that the impedance of the thimble becomes higher, which has a great impact on the stability of the test results.
The plugging and unplugging problem of the pogo pin connector is an important factor affecting the service life of the pogo pin connector. Now the most common method is to control different insertion and withdrawal forces according to different places of use. Although some pogo pins can be guaranteed to a certain extent The application of the connector, but not completely to solve this problem.
Electrical failure is generally a problem with the connection between the guide wire and the terminal, which is also a factor that directly affects the service life of the pogo pin connector. In order to effectively solve this problem, there is now a new type of reinforced crimping technology, which is the previous crimping technology. The upgraded version. After testing, this technology can reduce the occurrence of electrical failures to a great extent, and is gradually applied to actual production.
The main consideration is the electrical continuity of the contact pair when the pogo pin connector vibrates, shocks, and collides under the specified frequency and acceleration conditions. Under this dynamic stress condition, the contact pair will open instantly. The specified transient time is generally 1μs, 10μs, 100μs, 1ms and 10ms. What needs to be paid attention to is how to judge the instantaneous failure of the contact pair. It is now generally believed that when the voltage drop at the 2 terminals of the closed contact pair (contact) exceeds 50% of the power supply electromotive force, it can be determined The closed contact pair (contact) 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.