Three standards for PCBA aging test
2024-03-07
In order to ensure the stability and reliability of PCBA products, after the completion of PCBA processing, it is best to carry out a sampling inspection of aging test, the main purpose of aging test is to simulate the daily use environment of the product through the comprehensive effect of high temperature, low temperature, high and low temperature changes and electrical power, etc., and expose the defects of PCBA, such as poor welding, component parameter mismatch, and faults caused by the debugging process, so as to eliminate and improve, and the PCBA board without defects will play a role in stabilizing parameters.
There are 3 standards for PCBA aging test, and if you do it according to these 3 standards, general problems can be found.
1. Low temperature work: After the PCBA board is placed at a temperature of -10±3 °C for 1h, under this condition, it should be with rated load, and under the conditions of 187V and 253V, all programs should be powered on and run correctly.
2. High temperature work: After placing the PCBA board at 80±3°C/h, under this condition, with load, 187V and 253V conditions, all programs should be powered on, and the programs should be correct.
3. High temperature and high humidity work: the PCBA board is powered on at a temperature of 65±3 °C and a humidity of 90-95% for 48 hours, and each program should be correct.
The specific practice of PCBA aging test is:
1. Put the PCBA board at ambient temperature into the heat aging equipment at the same temperature, and the PCBA board is in the running state.
2. Reduce the temperature in the equipment to the specified temperature value at the specified rate, and when the temperature in the equipment reaches stability, the PCBA board should be exposed to low temperature conditions for 2h.
3. The temperature in the equipment is raised to the specified temperature at the specified rate, and when the temperature in the equipment reaches stability, the PCBA board should be exposed to high temperature conditions for 2h.
4. Reduce the temperature in the equipment to room temperature at the specified rate, repeat it continuously until the specified aging time, and measure and record the PCBA board once according to the specified aging time.
After the PCBA board has undergone the above process aging test, you can rest assured that it can be boldly delivered to customers, and the advantage of this is that customers can rest assured that the repair rate is very low and the quality is more stable.
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