[PCB_FORUM] Re: Allegro 0402 footprint for under a 1mm BGA?

Hi Kevin,

> I'm happy we (the list folks) could help.
> We give and take as we can and need to.
> Again, it isn't that I think you would come back and
> punch me (metaphorically speaking) if the symbol
> didn't work, I have had trouble with symbols
> before and if I give my cm the chance they will
> give me what works for them.
> And then it is THEIR fault if it doesn't work!
> But I still end up with the problem...

What I would like to do is derive the footprint from overlaying a “standard”
0402 footprint (the standard one we use that is) with the “free” area with
our via size/clearance requirements, and see what shakes out.  That should
give me the largest footprint that will “work” for us.  The CM may or may
not like it (Solectron), but that’s another issue ;-)

And yes, I have had footprints others have made bite me good.  Ones from
people who should unquestionably know better than to do some of the silly
things they do.

Regards,

Austin


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