Scott

This is often done for EMI containment. The drilling pitch is a function
of the wave length of the radiation.

Best regards

Lee

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Scott B. Westheimer
Sent: Tuesday, December 14, 2004 11:15 AM
To: [log in to unmask]
Subject: Re: [TN] Laser Stitching

Laser stitching is done by using a laser drill and drilling vias from
the
layer 1 to 2 about 1 cm or less apart in a stitching pattern. I am
interested in knowing the reason for doing this.

Thank you
----- Original Message -----
From: <[log in to unmask]>
To: <[log in to unmask]>; <[log in to unmask]>
Cc: <[log in to unmask]>
Sent: Tuesday, December 14, 2004 11:00 AM
Subject: Re: [TN] Laser Stitching


> Hi Scott - can you better define "Laser stitching" please (do you mean
> soldering or welding or brazing?).
>
> Dave Hillman
> Rockwell Collins
> [log in to unmask]
>
>
>
>             "Scott B.
>             Westheimer"
>             <swestheimer@HOTM
To
>             AIL.COM>                  [log in to unmask]
>             Sent by: TechNet
cc
>             <[log in to unmask]>
>
Subject
>                                       [TN] Laser Stitching
>             12/14/2004 09:50
>             AM
>
>
>             Please respond to
>              TechNet E-Mail
>                   Forum
>             <[log in to unmask]>
>             ; Please respond
>                    to
>                 "Scott B.
>                Westheimer"
>             <swestheimer@HOTM
>                 AIL.COM>
>
>
>
>
>
>
> Can someone tell me where I might find an article and/or information
on
> Laser stitching.
>
> Thank you
> Scott B. Westheimer
> 5709 Clarks Fork Drive
> Raleigh, N.C. 27616
> Phone: (919)713-0748
> Office: (919)713-4258
> Cell: (919)961-5364
>
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