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PCBA test process
PCBA testing generally develops specific test procedures based on the customer's test plan. PCBA tests generally include five main forms: ICT test, FCT test, burn-in test, fatigue test, and test in harsh environments.
1. The ICT (In Circuit Test) test mainly includes the on-off, voltage and current values and fluctuation curves, amplitude, noise, etc. of the circuit;
2. FCT (Functional Circuit Test) test requires IC program firing, simulates the function of the entire PCBA board, finds problems in hardware and software, and equips with necessary production fixtures and test stands;
3. The Burn In Test test is mainly to energize the PCBA board and electronic products for a long time, maintain their work and observe whether there is any failure failure. After the aging test, the electronic products can be sold in batches;
4, fatigue test is mainly to sample the PCBA board, and perform high-frequency, long-term operation of the function, to observe whether there is a failure, such as continuous click of the mouse up to 100,000 times or 10,000 times of LED lights, test the probability of failure, In order to feedback the working performance of the PCBA board in the electronic product;
5, the test under the Severe Conditions (Severe Conditions) is mainly to expose the PCBA board to the limit of temperature, humidity, drop, splash, vibration, obtain random sample test results, thereby inferring the reliability of the entire PCBA board batch products Sex.
After a series of PCBA tests, PCBA can attach a non-problem PCBA board to a qualified label and then package it for shipment.