PCB News - Talk about some tests that PCBA factories can do

Talk about some tests that PCBA factories can do
According to the understanding of the electronic editor, many customers are more concerned about whether their products can get a good quality guarantee from the supplier in the early stage of understanding. Today, customers affected by the epidemic do not want to go to many manufacturers. What they hope is that the entire circuit board process can be completed in one manufacturer. Therefore, the need to test after the smt patch is completed is also a very important place. Then under normal circumstances, what test the PCBA factory will provide for customers, the following electronic editor will share with you.

The PCBA test is normally placed at the back of the processing process, and the function is to check the integrity of the PCBA product. The test must be carried out in strict accordance with the regulations to improve the accuracy of the test, thereby improving the quality of PCBA factory shipments.

The PCBA test is mainly to test the functions, power calibration, life, performance and other data of the product. So what equipment is needed for testing? At present, the main test fixtures used in the PCBA production line are classified as follows:

1. ICT test
This test is mainly for PCB circuit boards and components, the application range is relatively small, and the equipment is relatively expensive, often only high-end products will be used, its function mainly includes the circuit's on-off, voltage and current values and fluctuation curves, Amplitude, noise, etc.

2. FCT test
After the PCBA production is completed, it is necessary to burn the program of the product into the IC, and then perform a functional simulation test on the finished product. Then this step is the FCT test, which can detect the problems in the hardware and software in time. And feedback to customers for software optimization and hardware problem improvement. This test is a must for PCBA factories.

3. Fatigue test
As the name suggests, the fatigue test is to test the durability of the PCBA, to see how long the circuit board can withstand the use of it before it fails. The test is generally the same batch of sampling testing. After high frequency and long time operation, detect the probability and proportion of failure, and use this parameter to determine the number ratio of fatigue.

4. Aging test
This test is mainly to keep the product energized for use, work continuously for a fixed time, and observe whether there are failures and malfunctions. Strict product control can only be mass-produced after passing the aging test.

5. Test of extreme conditions
This kind of test is not commonly used, and the main application scope is military industry, off-road vehicles, special equipment and other products that will encounter harsh working conditions. The test content includes the limit values of temperature, humidity, drop, water splash, and vibration.

To sum up, this is the test that PCBA factory can provide to customers under normal circumstances, and it is also some knowledge about test. Let’s talk about some of the tests that PCBA factories can do.