[PCB_FORUM] BBVs
- From: "Gary MacIndoe" <gary.macindoe@xxxxxxx>
- To: "Allegro Forum" <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Fri, 8 Apr 2005 09:47:08 -0600
All,
When you use blind and buried vias, do use set them up in the board database
from an existing regular top to bottom via? Do you create BBV padstacks for
your pad library?
I see in the padstack editor, Parameters tab, you can set the Type to
"Blind/Buried". I've tried to create a BBV padstack in the editor without
luck.
What do you guys using BBVs do? Create them in the design or in your
library?
Also, when creating the drill legend for the Fab drawing, if a 1-2 blind via
and a 8-7 blind via were created in the database from the same top to bottom
via (the same laser drill size in this case), the "figure" in the drill
legend is the same. Is this correct, or do you have different "figures" for
the 1-2 and 8-7 same size drills?
Thanks for any responses!
Gary E. MacIndoe
PCB Design Engineer
Advanced Micro Devices, Inc.
Longmont, Colorado
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