The testing process is particularly important in PCBA processing, and professional fixtures need to be used to test different aspects of PCBA products during the testing process. Only after passing the inspection can delivery be carried out. FCT and ICT testing, as the two main components of PCBA testing, have vastly different testing principles and content
ICT testing is an online test mainly used to test whether there are any abnormal conditions in the circuit function of electronic components on the PCBA board, such as open circuits, short circuits, etc. When conducting ICT testing, test points need to be arranged on the components in advance, and the probe of the tester must be accurately aligned with the component test points. ICT testing is mainly a static test, which is conducted when there is no power. It can quickly detect the reasons for component circuit abnormalities, such as poor welding or incorrect installation of components, and provide abnormal test results for subsequent maintenance work;
FCT testing is an online functional test mainly used to test the electronic and electrical functional aspects of the PCBA board. FCT testing is a dynamic test, which requires testing when powered on. Its testing principle is to simulate the real operating status of the PCBA board, input signals or power to the tested unit to test whether the data parameters of the tested unit are normal during various operations. The testing mainly includes functional items such as voltage, current, and power;
It should be noted that after passing these two tests, PCBA products can only prove that the circuit board can operate normally. A series of tests such as aging and fatigue testing are also required to determine the stability and reliability of the circuit board.
