PCB reliability testing mainly includes the following:
1.Temperature cycling test: The PCB is cycled in a high and low temperature environment to test its temperature resistance and thermal expansion coefficient to evaluate its reliability and stability at different temperatures.
2.Vibration test: The vibration that the PCB may be subjected to in actual use is simulated by the shaking table to test its mechanical strength and solder joint reliability to avoid failures caused by vibration.
3.Moisture sensitivity test: Test the PCB in a humid environment to observe whether there are water stains, corrosion and other phenomena on its surface to evaluate its reliability in a humid environment.
4.Smoke test: Simulate the fire situation that may occur in actual use, and test the performance of the PCB in high temperature, high humidity, smoke and other environments to ensure its safety and reliability.
5.Life test: Through long-term and high-intensity testing of PCB, it simulates its life and reliability in actual use, so as to provide guarantee for the quality and reliability of the product.
In addition to the above common test methods, there are many other test methods, such as electromagnetic compatibility testing, edge connectivity testing, etc. These test methods can be used individually or in combination to ensure the reliability and stability of the PCB.
When choosing a test method, it is necessary to consider the actual situation and specific needs. At the same time, attention needs to be paid to the accuracy and reliability of the test, as well as the repeatability and comparability of the test results. Only through scientific and rigorous testing methods can accurate test results be obtained, which can provide guarantee for the quality and reliability of products.