[SI-LIST] Re: Ground vias around signal via
- From: Kelvin Harding <kelvin.harding@xxxxxxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Wed, 15 Oct 2014 21:48:36 +0100
Hi Lee and All,
Why are some very concerned about stitching vias at layer transitions
and some not.
What results are available to show what happen when there is a
transition with / without stitching vias.
There are usually lots of ground vias at say an FPGA or connector so it
really applies to a transition where
the signal reference planes change.
Regards,
Kelvin
On 15/10/2014 20:32, Lee wrote:
> You are correct. Can't think of any case where they add value commensurate
> with their cost.
>
> Lee
>
> -----Original Message-----
> From: Aaditya K
> Sent: Wednesday, October 15, 2014 10:41 AM
> To: si-list
> Subject: [SI-LIST] Ground vias around signal via
>
> Hello Experts,
> I have a question on ground vias placement around signal via.
>
> My opinion is, if we have a proper return path, they are not necessary. Am
> I correct?
>
> Any situations they are useful other than shielding?
>
> How will they help? When do we need them?
>
> Please help.
>
> Thanks
> Aaditya
>
>
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