Hi Ioan!
Send your pictures to:
[log in to unmask]
Our facility was shutdown today because of the ice storm we just had, and
we're going to be shutdown tomorrow too. So I can't get to my work email.
But if you send em' here, I'll get em' posted.
Steve
----- Original Message -----
From: "Ioan Tempea" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, January 27, 2009 1:48 PM
Subject: [TN] Metal particles on the PCB
Dear Technos,
I have these PCB shaving a lot of small, but visible with unaided eye, Au or
Cu particles on them, all over. I have sent Steve a couple of images, but in
the mean time I would like to state my questions.
As per IPC-A-610D, 10.4.2, this is a defect condition. The exceptions at
5.2.6.1 say this would be acceptable if the particles were entrapped in
flux, which is not the case.
Big part of the litter goes away if wiped with alcohol soaked cloth, but not
all. Brushing will not remove the leftovers, which seem to be well attached
to the soldermask, but a solid nail scratching will.
First of all: is this a defect?
Secondly, are there any better methods to clean than what I have tried?
Plasma and other funky methods are not an option and solvent cleaning is
probably not either, since the boards are already populated on one side with
no-clean flux.
Thank you,
Ioan Tempea, ing.
Ingénieur Principal Fabrication / Sr. Manufacturing Engineer
30 ans déjà! - Already 30 years!
950 rue Bergar, Laval, Québec, H7L 5A1
t : 450-967-7100 ext : 244
Mtl : 514-990-5762
f : 450-967-7444
[log in to unmask]
www.digico.cc <http://www.digico.cc/>
P N'imprimer que si nécessaire - Print only if you must
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