[SI-LIST] Re: Ground Pour in Signal Layers
- From: "Robert Sefton" <rsefton@xxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 28 Feb 2006 11:01:52 -0800
Search the TechNet archives. Thieving comes up quite a bit. I'd say the
consensus is that thieving on inner layers is important to help bonding.
Some also claim it can help reduce warpage. On outer layers it's to achieve
more uniform plating.
http://listserv.ipc.org/archives/technet.html
Bob S.
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Lee Ritchey
Sent: Tuesday, February 28, 2006 10:08 AM
To: Charles Grasso; Gerry Gagnon; rhaller@xxxxxxxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Ground Pour in Signal Layers
Might want to check with the process engineers at Merix or TTM on this one.
> [Original Message]
> From: Grasso, Charles <Charles.Grasso@xxxxxxxxxxxx>
> To: <leeritchey@xxxxxxxxxxxxx>; Gerry Gagnon <mrgagman@xxxxxxxxxxx>;
<rhaller@xxxxxxxxxxxxx>
> Cc: <si-list@xxxxxxxxxxxxx>
> Date: 2/28/2006 9:34:58 AM
> Subject: RE: [SI-LIST] Re: Ground Pour in Signal Layers
>
> How interesting! I have not had to deal with thieving on inner layers
> so I popped down to our layout group and asked our folks there. The
> consensus was - YES - Thieving on inner layers can be necessary and
> should be used for unbalanced layouts. Indeed one former employee of
> DDI indicated that DDI had a program that automatically added thieving
> based on the design. The reason for adding the thieving is to avoid
> warpage.
>
>
> Best Regards
> Charles Grasso
> Senior Compliance Engineer
> Echostar Communications Corp.
> Tel: 303-706-5467
> Fax: 303-799-6222
> Cell: 303-204-2974
> Pager/Short Message: 3032042974@xxxxxxxx
> Email: charles.grasso@xxxxxxxxxxxx;
> Email Alternate: chasgrasso@xxxxxxxx
>
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