PCBA test refers to the PCBA board for IC burning, circuit on and off as well as current, voltage, pressure and other aspects of the comprehensive test for short. There are many uncontrollable factors in the production process of PCBA. PCBA testing is a key quality control link in the whole process of PCBA processing. It is necessary to strictly follow PCBA testing standards. Next, I would like to introduce the PCBA test instructions:
At present, there are five main forms of PCBA testing: ICT testing, FCT testing, aging testing, fatigue testing, and testing under harsh environment.
Among them, ICT(In Circuit Test) mainly includes on-off, voltage and current values, fluctuation curves, amplitude, noise and other related Circuit tests.
FCT(Functional Circuit Test) requires IC program firing to simulate the function of the entire PCBA board, find the problems existing in hardware and software, and equip necessary production jigs and Test racks to cooperate with the operation;
Burn In Test is mainly to electrize PCBA board and electronic products for a long time, keep them working and observe whether there is any failure fault. After the aging Test, electronic products can be mass-produced for sale, mainly for the purpose of testing the life of the finished products. Fatigue test is mainly to sample PCBA board and carry out functional high-frequency and long-term operation to observe whether product failure occurs. For example, clicking the mouse for 100,000 times or turning on and off the LED lamp for 10,000 times continuously to test the probability of failure, so as to feedback the working performance of PCBA board in electronic products.
The test under Severe Conditions is mainly to expose PCBA board to the working environment with limit value. By adjusting temperature, humidity, falling, splashing and vibration, the test results of continuous operation of random samples are obtained, so as to infer the reliability of the whole batch of PCBA board products.
The final product after a series of PCBA tests, no problem PCBA board can be affixed with a qualified label, finally can be packaged and shipped.
