[PCB_FORUM] Re: Where is package to package constraint set?

Setup > DFA constraint spreadsheet.
(v15.7)

Bill

-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Wages
Sent: Thursday, March 20, 2008 11:17 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Where is package to package constraint set?

Hmmm. That could be trouble from a manufacturing standpoint. From my
understanding, and depending upon the assembly process, taller
components
need more spacing around them. Whereas manufacturers like more space
around
relatively short BGA's to provide additional room for inspection scopes
and
to allow for re-working nozzles. I haven't used PADS though. 
Good luck.

Jim S. Wages
SR. PCB Layout Designer
(919) 484-2963

-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Austin Franklin
Sent: Thursday, March 20, 2008 3:00 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Where is package to package constraint set?

Hi Jim,

Got it, thanks.  I'm switching too much between PADS and Allegro...in
PADS,
you set a global body to body value.

Regards,

Austin


> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of Jim Wages
> Sent: Thursday, March 20, 2008 12:59 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: Where is package to package constraint set?
>
>
> Package to package spacing is regulated by the package boundary
> shape built
> into the footprint at the symbol level. PLACE_BOUND_TOP.
>
> Jim S. Wages
> SR. PCB Layout Designer
> (919) 484-2963
> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Austin
Franklin
> Sent: Thursday, March 20, 2008 2:47 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Where is package to package constraint set?
>
> Hi,
>
> For the life of me, I can't find where the default package to package
> constraint is set.  Where is it set?
>
> Regards,
>
> Austin
>
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