[SI-LIST] Re: Cu Thickness
- From: "Dagmara Avanindra" <dagmara.avanindra@xxxxxxxxx>
- To: sunil_bharadwaz@xxxxxxxxx
- Date: Wed, 18 Jul 2007 16:12:49 -0700
Sunil,
I would advise staying away from 2 oz copper thickness, espeacially if this
is a large board.
I have seen alot of reliability issues related to such a thick metal.
Regards,
Dagmara Avanindra
On 7/15/07, sunil bharadwaz <sunil_bharadwaz@xxxxxxxxx> wrote:
>
> Hi Experts ,
> I have been doing mixed signal boards , Digital , Analog & RF .RF up to
> 5 Ghz.No big issues so far.
>
> We are planning to do similar kind of boards with a new SOC.There is
> a concern regarding the IR drop as most of the permissible margins are
> eaten away at the package & chip levels.
>
> To mitigate this effect to a larger extent , the plan is to use 2 Ounce &
> higher levels of Cu thickness.So far we have been doing the mixed signal
> boards with Cu thickness of 1 Oz.
>
> Could there be any issues with this approach for the mixed signal boards ?
>
> Appreciate any inputs in this regards.
>
> Best Regards
> Sunil.B
>
>
>
>
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