Ioan,
We use RMA flux on a regular basis. Would you be using it on SMT and/or wave?.....as phil mentioned, RMA flux needs to be cleaned in a saponified wash. Alcohol is a very bad de-fluxer in general and should not be used on RMA fluxes. In case of spot/hand cleaning, we use the Ensolv aerosol cleaner.
Amol Kane | Process Engineer
Catalyst Manufacturing Services, Inc.
941 Route 38, Owego NY 13827
Phone: (607) 687-7669 Extn 349 | Website: www.catalystems.com
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Nutting
Sent: Friday, October 28, 2011 9:45 AM
To: [log in to unmask]
Subject: Re: [TN] Rookie question on RMA fluxes
Ioan,
"Flux for Dummies" version;
RMA flux works just fine with the correct processing. If you are locked in to the RMA, then cleaning will best be done with a saponifier in a water wash system. Alcohol only does a good job of diluting the flux and spreading it over the entire board.
Water soluble flux (OA) will work just fine, but again with the appropriate wash and dry.
My engineers were leery of OA flux until I produced boards that were cleaner than we had ever gotten. Now it is all they will accept.
I am sure there are some of our TechNet friend out there that can give a much more detailed response.
Regards,
Phil Nutting
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: Friday, October 28, 2011 9:08 AM
To: [log in to unmask]
Subject: [TN] Rookie question on RMA fluxes
Dear Technos,
Although I've been around in this trade of ours for quite a while now, I have never had the occasion to work with RMA fluxes. I need to know how this functions. How can RMA be cleaned, I've heard about alcohol...? Is regular aqueous wash enough? If alcohol only, do we need a special equipment? Anything else to know?
And, anyways, are RMA fluxes still available?
Also, I imagine most of you at ease with RMA have tried to talk your customers into converting to water soluble flux chemistries. How hard was that? Is it possible?
Thanks,
Ioan Tempea, ing.
Ingénieur Principal de Fabrication / Senior Manufacturing Engineer T | 450.967.7100 ext.244 E | [log in to unmask] <mailto:[log in to unmask]> W | www.digico.cc <http://www.digico.cc/>
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