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November 2008

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Subject:
From:
John Burke <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, John Burke <[log in to unmask]>
Date:
Wed, 12 Nov 2008 08:59:20 -0800
Content-Type:
text/plain
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text/plain (258 lines)
And while doing it made a by product of lead boots for the global electroncs
economy.

John Burke

(408) 515 4992

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE)
Sent: Wednesday, November 12, 2008 6:04 AM
To: [log in to unmask]
Subject: Re: [TN] NTC RE: [TN] Repair to ImAg plating?

A lot of people have turned this Lead-free quest into gold.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Nutting
Sent: Wednesday, November 12, 2008 7:00 AM
To: [log in to unmask]
Subject: Re: [TN] NTC RE: [TN] Repair to ImAg plating?

But the real question is can lead-free solder be changed into gold...
fun with chemistry.

Phil

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: Wednesday, November 12, 2008 8:55 AM
To: [log in to unmask]
Subject: [TN] NTC RE: [TN] Repair to ImAg plating?

Nooo, Joyce is not counterfeiting.  She can do a lot of wonderful lab
stuff, but that is not something she practices at or for RIM.
Bev
RIM

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey
(EHCOE)
Sent: Wednesday, November 12, 2008 8:42 AM
To: [log in to unmask]
Subject: Re: [TN] Repair to ImAg plating?

So that's why Bev has such a large R&D budget: counterfeiting. He has
you turning copper coins into Silver.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo
Sent: Tuesday, November 11, 2008 8:57 PM
To: [log in to unmask]
Subject: Re: [TN] Repair to ImAg plating?

Imag is. Chem process.  Control by solution composition, ph, etc.  It is
self limiting. If done properly, it could be on site.  I did plate a
copper coin using just the stuff your vendor mentioned.  However, I did
check conc, ph, temp, surface cleanliness, etc.  Make sure he take the
waste with him if you allow him to set a foot in your plant.  Good luck.

--------------------------
Sent using BlackBerry


----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Tue Nov 11 22:46:51 2008
Subject: [TN] Repair to ImAg plating?

Hi everyone,



We have an issue with loss of plating adhesion on some ImAg finished
PCBs.
The affected area is small and consistent in location across the PCBs
with
the defect.  All other areas seem to be ok when tested per a tape test.
The
PCB supplier is proposing to visit and "repair" them here at our site.
I
was not even aware plating could be repaired, let alone away from a PCB
fab
shop without plating lines etc.  Is this even possible?  I am very
hesitant,
as I very seriously doubt the control and/or quality of the "repair"
process.  At the very least, how would thickness be controlled?  We
specify
micro 5-12 inches in thickness per IPC-4553, and the overall PCB is to
meet
IPC-6012 Class 3.



Anyway, they described the process as follows:



I will send you the solution by Fedex in a small bottle. Once you have
received it, I will come to your facility and repair the boards.  I will
need a hot plate and Pyrex container to heat-up the solution to 120 F.
Do
you have these two items? Otherwise I will bring them with me. I will
clean
and repair the boards locally.  Once it is done, I will do the tape test
to
make sure the adhesion of the silver is adequate.



My little voice is screaming "NOOOOOOOOOOOOOOOOOOOOOOO!!"



Thanks in advance,

Kevin


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