Solder resist from QFP Leads

2/28/2017 6:59:16 PM

Does anyone have design knowledge of why some manufacturers remove solder resist from the area around pads on fine pitch devices? What purpose does it serve?
I only know that it would be better for AOI as you would not have light being reflected from the solder resist coating between soldered leads as it would be a matt finish if it was removed.

Pedro Skou

3/2/2017 6:59:16 PM

incredible work

Michele Baldin

3/2/2017 6:59:16 PM

incredible work

Luis Moreno

3/2/2017 6:59:16 PM

Bravo! Hope you can write soon.

Dana

3/2/2017 6:59:16 PM

Really appreciate your content. It quite benefits my learning and it has solved my puzzles completely. Thanks.

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Lebrun Bernard

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