Steve I forgot to mention that there is an updated IPC spec IPC-2141
Controlled Impedance
Circuit Boards and High Speed Logic Designs

This is an improvement over IPC-317A
And I give thumbs up!

Inkra Networks
Patrick Jabbaz CID
Sr Board Layout Eng.
40971 Encyclopedia Circle 
Fremont, CA 94538
Work (510) 249-4835
Mobile (408) 621-6533
[log in to unmask]


-----Original Message-----
From: Steve Smith [mailto:[log in to unmask]] 
Sent: Thursday, October 03, 2002 11:43 AM
To: [log in to unmask]
Subject: [DC] IPC-D-317A

Hi All,

I am looking for a recommendation.
I already have Howard Johnson's black magic book and while looking
through the latest IPC catalog came across their IPC-D-317A which
calls itself "Design guidelines for electronic packaging utilizing high
speed techniques".  Does anyone have this spec and could give me a
thumbs
up or down on it?

Thanks,
Steve Smith
Product Engineer
Staco Energy Products Co.
Web Site: www.stacoenergy.com

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