PCBA test main test items
PCBA test refers to the PCBA board for IC burning, line breakage, and current, voltage, pressure, etc. PCBA in the production process there are many uncontrollable factors, it is difficult to ensure that the PCBA is a good product, PCBA test is a necessary part of the strict control of the quality of the shipment. The next step is to introduce the main process of PCBA testing.
First, the PCBA test mainly includes which test
According to different products and different customer requirements, PCBA test will be different, in general, PCBA test mainly includes ICT online test, FCT function test, aging test.
Second, the process of PCBA test
PCBA test is generally based on the customer's test programme to develop a specific test process, the basic PCBA test process is as follows:
Program burning → ICT test → FCT test → aging test
1、Programme burning
PCBA board in the completion of the front-end welding processing links, engineers began to PCBA board in the microcontroller for the burning of the programme, so that the microcontroller can achieve a specific function.
2、ICT test
ICT test is mainly through the test probe contact PCBA test point, to achieve the PCBA line open circuit, short circuit and electronic components of the welding situation of the test, ICT test accuracy is relatively high, the instructions are clear, the use of a wide range.
3、FCT test
FCT test can test the environment, current, voltage, pressure and other parameters of PCBA, the test content is more comprehensive, to ensure that a variety of parameters of the PCBA board in line with the designer's design requirements.
4、aging test
Aging test through the PCBA board for uninterrupted continuous power, simulating the use of user scenarios, detecting some of the defects that are not easy to find, as well as test the service life of the product, can ensure product stability.
PCBA after a series of PCBA test, there is no problem PCBA board can be affixed with a qualified label, and finally can be packed out.
