How often a probe needs to be replaced with a new one depends entirely on the life of the spring and other factors that jeopardize the life of the test probe.
Factors that jeopardize the life of a test probe are shown below:
1, interface testing. Basic probes, this kind of probe life is generally in the 100,000 up and down. However, life is usually determined by the interface test, if the interface test is very poor, a variety of impurities into the probe connecting tube, it is easy to torsion spring destruction, then you have to replace the probe. This is a small part of the replacement, there is a regular inspection of the probe to carry out the replacement, when adopted to a certain time, the probe must be replaced. If it is a high-frequency probe, this is more special, high-frequency probe is mainly embodied in the high-frequency needle for the core needle, so high-frequency probe replacement is generally carried out for the replacement of the core needle, so that the cost can be greatly reduced.
2, the fine probe. Usually, the finer the probe is relatively less, so the normal life of the probe is close to the manufacturer to give the basic theoretical life. Do a good job of fixture maintenance, and its fixture test board cleanliness, in accordance with the requirements of the probe trip for testing, so that the number of probe replacement will be low.
3, probe users use method. Improper use of the user may also cause the test probe due to destruction and early replacement. For example, the depth of the top of the probe head down pressure (in fact, the head is the head touching the test case when the top of the head down pressure level. For example, the depth of pressure on the top of the probe head (actually the level of pressure on the top of the head when the head touches the test case. Each consumer's design and operating methods are different, this application method is to determine the life of the probe several key factors.
4, the quality of gold plating on the surface of the probe. Probe surface selection of gold plating is beneficial to improve electrical conductivity, general manufacturers generally pick SK4 raw materials, within the average life of 30,000 ~ 1 million times the performance of torsion springs, in fact, about the life of the probe, many merchants are not to give a clear answer, due to the probe is divided into many grades. Along with the customer's pursuit of costing, the domestic also divided into general materials and imported good quality, imported in the Chinese market there are also many genuine and imitation. No matter which level of the probe, general manufacturers also dare not give customers a specific application life.