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The PCBA test ways are Dedicated, universal grid, flying probe, E-Beam, conductive cloth, Capacity, and ATG-SCANMAN.
In PCBA processing and production, it is inevitable for external factors to cause electrical defects such as short circuits, open circuits, and leakage. If we can not screen out the defective plate in time and let it flow into the following process, it will cause more severe consequences, so improving the PCBA testing process is one of the solutions to improve product yield.
There are three types of equipment commonly used. They are a dedicated (PCB-PCB automatic universal testing machine), a high-quality universal testing machine, and a flying needle testing machine.
FlyingProbe test
The flying-probe Test uses 4 probes to test the high-voltage insulation and low-resistance conduction of the circuit board (open circuit and short circuit of the test circuit) without the need to do the test fixture. It is very convenient to install a PCB board directly and run a test program, which saves test costs, reduces the time of making a test stand, improves shipping efficiency, and is suitable for testing small batches and samples.
Test Rack
It’s for PCB board production for on-off testing and a particular test fixture, the production cost is higher, but the test efficiency is better, return the single does not charge.
First of all, for test technology, the flying-probeTest is electrical test equipment suitable for small volume production and sample at present. However, if it is to be used in medium and large volume production, the speed of the Test is slow. The equipment is expensive, and it will significantly increase the test cost.
And the cost of the Test can reach the standard of scale economy as long as the quantity of production of the general-purpose and special-purpose PCB board reaches a certain level. And only about 2 ~ 4% of the sale price, so the generics and special-purpose for the current mass-production type are the main reason for the test machine.
