What Are The Main Processes Of PCBA Testing?

PCBA testing refers to the testing of the PCBA board for IC programming, circuit continuity, current, voltage, and pressure. PCBA testing is a necessary link to strictly control the quality of shipments, because PCBA has many uncontrollable factors in the production process, and it is difficult to ensure that PCBA production is completed and is a good product. Next, I will introduce the main process of PCBA testing.

一, What tests are mainly included in the PCBA test?

According to different products and different customer requirements, PCBA testing will be different. In general, PCBA testing mainly includes ICT online testing, FCT functional testing, and aging testing.

二,Second, the process of PCBA testing

PCBA testing generally develops a specific test process based on the customer's test plan. The basic PCBA test process is as follows:

Program burning→ICT test→FCT test→aging test

1. Program burning

After the PCBA board completes the welding process of the front end, the engineer begins to burn the program of the single-chip computer in the PCBA board, so that the single-chip computer can realize specific functions.

2. ICT test

The ICT test mainly uses the test probe to contact the test point of the PCBA to realize the test of the PCBA circuit open circuit, short circuit and the welding condition of the electronic components. The accuracy of the ICT test is relatively high, the instructions are clear, and the scope of use is relatively wide.

3. FCT test

FCT test can test the environment, current, voltage, pressure and other parameters of PCBA. The content of the test is relatively comprehensive, which can ensure that the various parameters of the PCBA board meet the design requirements of the designer.

4. Aging test

The aging test can ensure the stability of the product by continuously energizing the PCBA board, simulating the user's use scene, detecting some difficult-to-find defects, and inspecting the service life of the product.

After PCBA passes a series of PCBA tests, the PCBA board with no problem can be affixed with a qualified label, and finally it can be packaged and shipped.