Hi,
I'm hoping some list denizens have experience that'll help me understand
this:
I've got a footprint for a 8-WDFN part from UltraLibrarian. The
footprint as-downloaded has negative mask expansion and offset paste
regions. This is hard to describe, hmmm...
1. The soldermask layer has no openings at all (I think this is pretty
obviously an error)
2. The paste layer has the stencil openings offset outward from the
pads. Imagine the following crude ascii art as layers superimposed on
top of each other:
Copper: [_pad_] [_pad_]
Paste: [_____] [_____]
So that'd have paste partially on the exposed copper pad and partially
on soldermask (assuming I fix problem #1 so that the pad is exposed).
Is this at all normal for this kind of part? Do other people run into
such egregious problems in UltraLibrarian CAD models?
Thanks,
-Brian
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