<div dir="ltr">Yes! <div><br></div><div>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. </div><div><br></div><div>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. </div><div><br></div><div><br></div><div>Trampas</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 31, 2023 at 1:58 PM Brian via TriEmbed <<a href="mailto:triembed@triembed.org">triembed@triembed.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
I'm hoping some list denizens have experience that'll help me understand <br>
this:<br>
<br>
I've got a footprint for a 8-WDFN part from UltraLibrarian. The <br>
footprint as-downloaded has negative mask expansion and offset paste <br>
regions. This is hard to describe, hmmm...<br>
<br>
1. The soldermask layer has no openings at all (I think this is pretty <br>
obviously an error)<br>
2. The paste layer has the stencil openings offset outward from the <br>
pads. Imagine the following crude ascii art as layers superimposed on <br>
top of each other:<br>
<br>
Copper: [_pad_] [_pad_]<br>
Paste: [_____] [_____]<br>
<br>
So that'd have paste partially on the exposed copper pad and partially <br>
on soldermask (assuming I fix problem #1 so that the pad is exposed).<br>
<br>
Is this at all normal for this kind of part? Do other people run into <br>
such egregious problems in UltraLibrarian CAD models?<br>
<br>
Thanks,<br>
-Brian<br>
<br>
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