Lonstar Circuit Co., Ltd./ PCB&PCBA Supplier

PCBA Testing

PCBA testing is a key step to ensure production and delivery quality. Lonstar is a one-stop PCBA service supplier that can make testing fixtures based on customer designed testing points, programs, and steps, and use them for 100% batch testing.

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What is PCBA testing

PCBA testing refers to the electrical conductivity and input-output value testing of PCBA circuit boards with electronic components mounted on them. In the design of PCB circuit boards, there are numerical relationships such as voltage and current between different test points. It is necessary to use professional testing equipment or manually operate a multimeter to test the test points and verify whether the actual PCBA board meets the design requirements.

PCBA Testing Classification

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ICT (In Circuit Test) testing: mainly detects the voltage/current data of the test points after the PCB circuit board is powered on, and does not involve testing of functional buttons or input/output aspects.

FCT (Functional Test) testing: First, the pre written microcontroller (MCU) program needs to be burned into the program IC through a programmer (such as ST Link, JTAG) to achieve the corresponding functional testing. For example, after pressing the button, the LED light will turn on; Press both buttons simultaneously to restore factory settings, etc. Of course, whether all functional tests can be carried out must be based on the premise of PCB soldering and circuit conductivity, otherwise it can’t be achieved.

Burn In Test: Conduct long-term, periodic simulation of user input and output on PCBA boards that have been programmed and passed FCT to test their durability and soldering reliability. In special circumstances, it is also necessary to expose the PCBA board to a specific temperature and humidity environment.

PCBA testing is an essential and important link in the entire PCBA manufacturing supply chain, controlling quality from the final data results. In standardized design and manufacturing management, PCBA testing must be considered and implemented.