Flying Probe Testing for Printed Circuit Board Manufacturing
The electrical test is performed before delivering the PCBs. Usually, all the PCBs will go through E-test after manufacturing. Open circuits and short circuits are the default test types. As a professional PCB manufacturer and PCB assembly supplier in China, JHYPCB also provides other test types according to customers’ requirements.
The function of the electrical test for PCBs
The electrical tests have become an irreplaceable test method for PCBs with blind vias and buried vias except for the visual inspection and the AOI. Only E-test can check out the missing connections on the board. The main electrical testing procedures for PCBs are listed as following:
· Circuits open and short testing
· Capacitance testing
· Resistance testing
· Comparative testing
· Flip testing
· Continuity testing
· Adjacency testing
Two major types of test equipment used in electrical test
· Flying probe
A flying probe is a machine used for the flying probe testing method. With software that suitable for the PCB layout, the flying probes check the signal one by one. The whole testing time is about 1 to 3 minutes.
Advantages:
· No need for fixed testing tools
· Low cost
· Short delivery time (suitable for PCB prototyping)