[PCB_FORUM] Re: high speed board material.

  • From: SjChar3@xxxxxxxxxxxx
  • To: icu-pcb-forum@xxxxxxxxxxxxx
  • Date: Fri, 18 Feb 2005 18:23:15 -0500

sorry i was thinking something and writing something else, its a miracle some 
boards come out working.;)
"Austin Franklin" <austin@xxxxxxxxxxxx> wrote:

>Hi,
>
>FR-4 is fine for your specs below.  I have FR-4 boards that run Infiniband
>4x (2.5GHz x 4 signal lanes), and no problem.  That's the highest I've gone
>on FR-4.  I do suggest you do simulation though, and you pay careful
>attention to routing rules.
>
>BTW, 1GHz better have better than a 9ns edge rate, or you won't get any
>signal ;-)
>
>Austin
>
>
>> -----Original Message-----
>> From: sjcharles@xxxxxxx [mailto:sjcharles@xxxxxxx]
>> Sent: Friday, February 18, 2005 11:37 AM
>> To: icu-pcb-forum@xxxxxxxxxxxxx
>> Subject: [PCB_FORUM] Re: high speed board material.
>>
>>
>> speed 1 ghz, 8 ly, 1/2 oz, rate edge approx 9n, 5/5 width and
>> spacing maybe 4
>> for necking. two or threes pair controlled Z. If Fr4 will do the
>> job then i that
>> would be fine.
>>
>> thanks
>
>
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