[SI-LIST] Re: Trace width selection for high speed serial links
- From: "Aubrey Sparkman" <asparkman@xxxxxxxxxxxxx>
- To: <jhasson@xxxxxxxxxxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Mon, 31 Aug 2009 11:34:59 -0500
JF,
If you use wider traces, you will need thicker dielectrics to hold the
impedance target which means your board might get thicker. Thicker boards
will have impact on connector selections.
If you are minimizing skin effect loss, you may want to consider lower loss
dielectrics.
Aubrey Sparkman
Aubrey.K.Sparkman@xxxxxxxx
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of jhasson@xxxxxxxxxxxxxxxxxxx
Sent: Monday, August 31, 2009 11:21 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Trace width selection for high speed serial links
Hi,
It is often mentionned in guidelines for routing high speed differential
serial links to have a trace width between 4 and 8 mils to reduce skin
effect losses. What would be the drawback of having even larger traces like
10 or 12 mils if any ? The setup would be to use loose coupling and the
board density is not the main concern.
Best regards,
JF Hasson
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