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What is a test probe?Signal contact pin company

source:Industry News    Popular:pogo pin for moilble phone     release time:2021-11-20 08:55:05     Article author:sznbone

What is a test probe?Signal contact pin company(图1)

  What is a probe: the type and function of a test probe What is a probe? In electronic device testing, there are two types of probes: shrapnel microneedle modules and Pogopin probe modules. These two kinds of probes are all used to test radio frequency connector modules such as mobile phones, display screens, and surveillance cameras.

  What is a probe: Comparison of shrapnel microneedle module and pogopin probe module:

  1. The current transmission capacity and the adaptability of the small pitch industry. The shrapnel micro-needle module is an integrated shrapnel structure. It is lightweight and has been hardened after electroplating. The maximum amount of current that can be installed can reach 50A. When the electric current is transmitted, the goods circulate in the same raw material body, which can be better controlled by the network; in the small pitch industry, the shrapnel micro-needle module has high adaptability, and the value range can be at least 0.15mm, and the performance is very stable. The Pogopin probe module is composed of a needle tube, a needle barrel, and a needle tail. Because there are many parts, the current is transmitted from the needle tube to the needle barrel and then to the needle tail. The resistor is generally variable, and the amount of current is also different. Position attenuation coefficient, leading to unstable connection; in the small pitch industry, pogopin's adaptability is weak, and the available value range is only between 0.3mm-0.4mm, and it is very likely that the pin will be stuck and the pin will be broken, which cannot be solved. Smaller pitch test.

  2. High-frequency test and service life The average service life of the shrapnel microneedle module can be more than 20w times. Under the conditions of actual operation, maintenance, and natural environment, it will be 50w times, and the service life is long. Don't need to be replaced often. In the high-frequency test, it has a good ability to solve the work and can maintain the connection for a long time. The Pogopin probe module has a service life of only 5w times. When dealing with high-frequency test requirements, it must be frequently replaced and cleaned up. The consumption of time and material resources will slow down the test progress and adversely affect the reliability of the test. sex.

  3. Compatibility between the head shape and the tested target When testing radio frequency connector modules such as mobile phones, display screens, and surveillance cameras, the shrapnel micro-needle module can use different head shapes to solve the male and female RF connector sockets. Make the connection more stable. When testing the male socket, you can use the serrated shrapnel to contact the top shrapnel of the RF connector male socket at multiple points to ensure the reliability of the touch; when testing the female socket, you can use the sharp-mouth shrapnel and the shrapnel of the RF connector female socket. The contact surface has been maintained to ensure the reliability of the connection. The test pass rate of the shrapnel microneedle module on the female seat can be 99.8%. The Pogopin probe module is basically unable to complete the test of the RF connector female seat. In most cases, the reliability deviation is solved temporarily by lightly pressing the plan. Pogopin is rarely used in the female socket test, it is very easy to break the pin, and the test pass rate is only 80%.


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