[PCB_FORUM] Re: Removing unused pad rings on inner layers DUR ING design...
- From: george.h.patrick@xxxxxxxxxxxxxx
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Thu, 31 Mar 2005 10:09:20 -0800
Not without custom vias, such as what you were doing before.
--
George Patrick
Tektronix, Inc.
Central Engineering, PCB Design Group
P.O. Box 500, M/S 39-512
Beaverton, OR 97077-0001
Phone: 503-627-5272 Fax: 503-627-5587
http://www.tektronix.com http://www.pcb-designer.com
It's my opinion, not Tektronix'
-----Original Message-----
From: Austin Franklin [mailto:austin@xxxxxxxxxxxx]
Sent: Thursday, March 31, 2005 10:03
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Removing unused pad rings on inner layers DURING
design...
Hi Oleg,
> I think during design you do need pads on all layers in order to
> have proper
> DRC.
There is no design requirement to have pads on all layers, only when they
are connected to a trace on a particular layer (outer layers aside). With
the pad ring removed, the clearance is not trace to pad, but trace to drill
instead. This gives a lot more routing room between vias. As I mentioned,
I do this very thing routinely, but with custom pad stacks. And, as you
note, this is routinely done during fabrication as well, so why can't the
tool do it during design (or can it, and that's my question)?
Regards,
Austin
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