It was a question from my customer. I advised him that with that
much rework the copper to laminate adhesion will give before the
laminate is damaged. Aalso that higher temperature materials are
available but they typically have lowr peel strengths. Thanks for your
interest.

On 31 Oct 2003 at 13:19, [log in to unmask] wrote:


Eddie,

I'm not meaning to sound asinine, but I would concerned about
reworking
components (especially BGA's) 2 to 3 times regardless of the
laminate. Why
the rework?



Jason Gregory
SMT Production Supervisor/
Integrated Product Team Leader
LaBarge Inc.
(918)459-2367
(918)459-2221 fax
[log in to unmask]
http://www.labarge.com






                      Eddie Rocha
                      <[log in to unmask]        To:
[log in to unmask]
                      M>                       cc:
                      Sent by: TechNet         Subject:  [TN] FR4 and rework
                      <[log in to unmask]>


                      10/31/2003 01:37
                      PM
                      Please respond to
                      EddieR






Should there be a concern when reworking BGA's 2 to 3 times when
using 170Tg Fr4? Is there a better choice for the laminate when this
much rework is expected.


-- Thanks,
Eddie Rocha
(408) 978-8992 x 282

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-- Thanks,
Eddie Rocha
(408) 978-8992 x 282

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