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Xiuxiu Liu
Hole edge to solder mask edge clearance for tented vias
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May 29.2019, 18:16:28
Anyone have any recommendations on how much clearance is required between the edge of a via hole and the edge of the soldermask for reliable tenting? Essentially I'm wondering how close to a pad I can put a tented via before having to worry about solder thieving. Obviously the design clearance will need to take into account the manufacturer's mask alignment tolerance, but once that's accounted for, how much clearance is required to ensure good adhesion of the mask? Is it sufficient to go by the manufacturer's minimum mask width?
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