The cleaner the person uses 6-10 times a day is hand soap and water which removes all the oils and food products.
The aqueous cleaner therefore only has to remove the OA flux which it is designed to do.
----- Original Message -----
From: "Joyce Koo" <[log in to unmask]>
To: [log in to unmask]
Sent: Wednesday, March 4, 2009 9:07:16 AM GMT -05:00 US/Canada Eastern
Subject: Re: [TN] Gloved Hands / Fingerprints / Failure Articles
What is your cleaner? Is it good to remove fry chicken oil, powder make up, drssing used on salad, etc. How about after wash? The cleaner is designed to remove industry contaminant what ever used in your process, not universal cleaner. Let me know if you have a universal cleaner in you neck of woods. It could potentially a winner for the award from ipc ;-).
--------------------------
Sent using BlackBerry
----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Wed Mar 04 08:39:20 2009
Subject: Re: [TN] Gloved Hands / Fingerprints / Failure Articles
If you have a ROSE Tester (Ionograph Omegameter etc) cycle a board, leave in
machine.
Ask recalcitrants to (with bare fingers) remove and immediately replace in
machine.
Re-test it and have them watch the numbers.
Regards
Mike
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kevin Glidden
Sent: Wednesday, March 04, 2009 1:27 PM
To: [log in to unmask]
Subject: [TN] Gloved Hands / Fingerprints / Failure Articles
Hello everyone,
We are in the midst of a proposal from myself and manufacturing engineering
to require use of gloves or finger cots throughout our PCB assembly process.
We had considered that it really would only be required after final
cleaning, but for uniformity would require it all steps including
population. We have of course met with a real resistance, particularly from
the final assemblers who are stating it doesn't matter once the conformal
coat is on. I can see at least some logic in that, and admittedly a large
portion of our argument is aesthetics (we don't want fingerprints on the
boards even after coating), but it would be really nice to have some sort of
scare tactic, like an article or something that related a PCB failure to
fingerprints or handling contamination. Anyone have such a thing?
Thanks!
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