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Printed Circuit Board Assembly & PCB Design Forum

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UIC GSM and NiPdAu pads

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#60137

UIC GSM and NiPdAu pads | 19 October, 2009

We have a problem with QFN IC's with NiPdAu plated pads. Our ULC's don't see the pads due to the almost ideal reflection. Vision sees the pads almost black. As we don't have OAL-cameras (which can help in this case, I assume), I am thinking of back-lit nozzles, as QFN's have pretty good defined case outline and then center using MELF algorithm...?

- Deni

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