Yes! My experience is that the footprints and symbols are often wrong from the UltraLibrarian and other symbol and footprint providers. I got one footprint for a 100mil through hole that had solder mask over the pads. Others were missing holes, etc.
I find that I prefer to build my own symbols and footprints using Altium and then find a 3D model of the part to verify the footprint. That is place a 3D model over the footprint and verify it fits. Trampas On Thu, Aug 31, 2023 at 1:58 PM Brian via TriEmbed <triembed@triembed.org> wrote: > 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 > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed@triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > unsubscribe-triem...@bitser.net?subject=unsubscribe > Searchable email archive available at > https://www.mail-archive.com/triembed@triembed.org/ > >
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