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How To Use The Test Probe To Test The FPC Board On FCT

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It is namely FPC board that is made of the flexible print circuit board and widely used in electronic products.


We should know the characteristics of the FPC board before we get to test it.


The FPC board has a plurality of bare metal wires arranged in groups to connect the connectors at both ends soldering the copper foils or gold pads.


We ought to test the copper foils or gold pads on the FPC


But because the copper foil is a very thin and light layer of metal, its adhesion force is much smaller than other components (pads or dips). The copper foils are easily peeled from the substrate. So we should pay more attention to test it protectively.


What kind of test probe can be applied to test the FPC soft board on FCT?


The thin copper foil is easy to be stabbed or scraped by the inappropriate spring contact probe. We can use the right chosen spring force and appropriate stroke and a matching probe head type to figure it out.


Our 13 (25 teeth plum type) head type, it can effectively detect the copper foil test pads of FPC soft board.(See more on Tip Collections)


1. A 25-tooth plum blossom designed head tip 1309, which can effectively increase the contact area on the pad compared to a sharp tip, crown tip, and 9-point tip. It also increases the puncture compared to a flat head, which can perfectly balance the puncture and contact.


2. Tip 13 size adopts a 0.9mm~1.2mm diameter design to cover the mainstream FPC copper foil size and ensure the first pass yield increased by 60% compared with ordinary probe tips.


3. Meanwhile, choose the light spring force 100g can effectively reduce the risk of scratching copper foil as well as ensure product stability.


4. Make sure not to leave a footprint on the gold pads by applying the right working stroke.


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