Shenzhen Tongyuexin Technology Co., Ltd
PCBA testing mainly includes five forms: ICT testing, FCT testing, aging testing, fatigue testing, and testing in harsh environments.
1. ICT testing mainly includes the on/off, voltage and current values, fluctuation curves, amplitudes, noise, etc. of circuits.
2. FCT testing requires IC program firing to simulate the functionality of the entire PCBA board, identify hardware and software issues, and equip necessary SMT production fixtures and testing racks.
3. Fatigue testing mainly involves sampling PCBA boards and performing high-frequency, long-term functional operations to observe whether failures occur, determine the probability of testing failures, and provide feedback on the performance of PCBA boards in electronic products.
4. Testing in harsh environments mainly involves exposing PCBA boards to extreme temperatures, humidity, drops, splashes, and vibrations to obtain random sample test results, thereby inferring the reliability of the entire PCBA board batch of products.
5. The aging test is mainly to power on the PCBA board and electronic products for a long time, keep them working, and observe whether there are any failures or faults. Only after the aging test can the electronic products be sold in bulk.
The functional testing of PCBA includes:
General Part:
1: Power Supply Test - Check if the power supply is working properly, test the voltage at each point - use a comparator or other device
2: Port (interface) testing, whether there is Short&Open causing exceptions
3: Integrated Circuit Module IC I/O Read/Write Function Test - Flash&EEPROM&CPU&DRAM&Logic IC, etc
3: Special function testing (different circuit boards have different requirements) - if equipped with infrared, an external receiver is required
PCBA testing depends on what type of testing you are doing, ICT or FCT. The fees for different testing methods will vary greatly because ICT equipment and fixtures are relatively expensive. However, ICT can provide good test results and bring great benefits to repair.