[SI-LIST] Re: EXT :Re: What's the purpose of stitching vias whichjust connect one GND layer?

  • From: Joel Brown <joel@xxxxxxxxxx>
  • To: chris.cheng@xxxxxxx
  • Date: Thu, 5 Nov 2015 14:02:33 -0800

Option 1 - Design without vias, build boards test for functional, signal
integrity go to lab and test for EMI.
If you pass all three then great, if not you just threw away thousands of
dollars and months of time and have to respin the board.
Maybe there are cases you can get away with it.
Option 2 - Design the vias from the start, I think it is very rare that the
added vias can't be accommodated by the layout, if not maybe you need a
different layout person. Also rare that the added vias would increase board
cost unless you are worried about pennies.


On Thu, Nov 5, 2015 at 12:50 PM, Cheng, Chris <chris.cheng@xxxxxxx> wrote:

Must have VIAs------Steve
No VIAs for you ------ Lee
Chris Cheng
Distinguished Technologist , Electrical
Hewlett-Packard Enterprise Company

+1 510 344 4439/ Tel
chris.cheng@xxxxxxx / Email
4209 Technology Dr
Fremont, CA 94538
USA



-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Doug Smith
Sent: Thursday, November 05, 2015 11:58 AM
To: Scott McMorrow; Shimko, Steve (ES)
Cc: Lee Ritchey; istvan.novak@xxxxxxxxxxx; dmarc-noreply@xxxxxxxxxxxxx;
si-list@xxxxxxxxxxxxx; bbakshan@xxxxxxxxx; Kevin.Hou@xxxxxxxxxx
Subject: [SI-LIST] Re: EXT :Re: What's the purpose of stitching vias
whichjust connect one GND layer?

Can someone translate the characters below for me?

Doug
University of Oxford
Department for Continuing Education
Oxford, Oxfordshire, United Kingdom
--------------------------------------------------
Doug Smith
P.O. Box 60941
Boulder City, NV 89006-0941
TEL/FAX: 702-570-6108/570-6013
Mobile: 408-858-4528
Email: doug@xxxxxxxxxx
Web: http://www.dsmith.org
--------------------------------------------------


On Thu, 5 Nov 2015 19:45:03 +0000, "Shimko, Steve (ES)"
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