[PCB_FORUM] Re: Hi-speed routing

Weiheng,
You may think that this is a simple question, but not on this mail list...! :)

One nanosecond is about equal to six inches of trace length in a typical FR4 
PCB, so a 1-inch trace would equate to ~167 picoseconds.

Let the fun begin!

Regards,
Andy Green

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx 
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of weiheng li
Sent: Monday, October 20, 2008 12:57 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Hi-speed routing


Hi,

I have a simple quesion.  Usually, how many nano-seconds does 1-inch-trace's 
propagated delay equal to?  Thank you.

Regards,

Weiheng


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