Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

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castellated lead aperture design

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#52199

castellated lead aperture design | 25 October, 2007

Is anyone able to help me out on a typical aperture design for a castellated lead.

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#52219

castellated lead aperture design | 28 October, 2007

With a 7 thou stencil, we'd go 1 to 1. So for a more typical 6 thou stencil, we'd bump the aperture area by 1.15, maybe 1.2. We make no distinctions between 'innies' and 'outies'.

Are you talking about castellations on land grid devices [ie, BCC�, LGA, QFN, MicroLeadFrame�, etc]? If so, we'd go 1 to 1.

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