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December 2004

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Subject:
From:
Franklin D Asbell <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Franklin D Asbell <[log in to unmask]>
Date:
Thu, 9 Dec 2004 09:38:24 -0600
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You know, it just really chaps my hide when people in manufacturing and
production do not accept the direction and interpretation of those of us in
quality...we obviously know more than they do, why do they need to cause us
so much trouble???


(grinning) Boy I bet that sent some heads spinning...it was of course said
off the cuff...so relax...

My question would be what affect will there be on the exposed copper over
time? Will, or could this lead to reliability issues later? If that amount
of exposed copper is allowed, and it reliability including normal function
is not affected then leave it alone...to mess with it may only cause more
expense...if reliability could be affected...then perhaps it needs to be
addressed...it's all about weighing the factors involved...

Now, for those production types whose head exploded on that first
paragraph...duct tape wrapped tight around the skull will contain the gray
matter...just a thought...

Franklin D Asbell
a non-anti-production Quality type person...


-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Connie Korth
Sent: Thursday, December 09, 2004 9:59 AM
To: [log in to unmask]
Subject: [TN] copper exposed


        Good AM Techies,

        We have some resistors that did not take the tinning all the way to
the
body.  There is some copper exposed by the body, but the lead in the solder
connection is good.  Per IPC-610, if copper is exposed due to deformation
or nicks/gouges >10%, it is a defect.  We have absolutely no deformation in
these component leads.  My decision was to leave them in the board.  We
have a Mfg. Engineer who wants to have them all replaced.  He feels I have
interpreted the IPC-610 incorrectly.  I feel that this is unnecessary
rework that could damage the PCB.  Any supporters out there?

        Connie M. Korth
        Quality Specialist
        Reptron Manufacturing Services, Hibbing
        [log in to unmask]
        218.262.8209

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