In the process of manufacturing PCBA boards, there will be fatal defects such as short service life and unstable use, which requires suppliers to do sufficient reliability tests.
How many methods are available for PCBA reliability testing?
1. Aging test
The PCBA board is placed under a specific temperature and humidity condition, and the stability of the PCBA board is checked through 24 to 72 hours of continuous work. Because the aging test takes a long time, it does not have the possibility of large-scale batch operation. In the actual process, the aging test is only a sample test, and the overall yield of this batch of products is judged by the qualified rate of the random test.
2. Vibration test
Some problems caused by vibration during PCBA transportation, such as component falling off, pad cracks, etc. Through the vibration test, the vibration effect during transportation can be effectively simulated in the laboratory, and the hidden dangers in the welding process are gradually exposed. So as to avoid batch welding defects to the greatest extent and improve the overall yield rate of delivery.
3. Surge test
In the process of PCBA processing, it is often OK to work under normal voltage, but occasional defects in a certain surge. Many circuit designs are not perfect. They often fail to consider the fatal impact of instantaneous voltage or current impact on the entire circuit. This requires us to conduct sampling surge impact experiments before the mass production of PCBA.
4. Packaging test
This is a test that cannot be ignored. We often spend a lot of energy to perfect the PCBA board, but we lose in the last link of packaging and transportation. The factory should simulate the packaging form of the PCBA board for proper drop test to ensure proper packaging and avoid PCBA damage during transportation.