I'll second what Doug stated as I have used a batch system with 18% Kyzen A4520 at 120°C that successfully removes "no clean" residues from assemblies that have been sitting for up to 2 weeks.  One thing to remember is that not all no-cleans are synonymous with low residue.  Some "no clean" residues will look 10X worse after being exposed to a cleaning process.  I suggest contacting your solder/flux supplier and ask what they recommend.
Good Luck

Steve

Steve Sauer, CEPM
Sr. Project Engineer
Northrop Grumman Xetron
Cincinnati, OH
513-881-3368
[log in to unmask]


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas O. Pauls
Sent: Wednesday, March 05, 2008 9:00 AM
To: [log in to unmask]
Subject: Re: [TN] Cleaning No-clean

Dan,
Yes, many of the low residue fluxes can be successfully cleaned with the right saponifier and batch wash parameters.  I would suggest that you contact Kyzen Corporation.  They have done a great deal of work on chemistries to clean low residue fluxes, in both in-line and batch operations.  They have looked at almost every flux made.  We are a Kyzen house here at Rockwell.  They support their products very well.

Charlie Pitarys of Kyzen regularly hangs out on this forum.  I suspect he will be contacting you.

Doug Pauls
Rockwell Collins




Dan Mauro <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
03/05/2008 06:35 AM
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[TN] Cleaning No-clean






Folks,

 

I have a need to clean No-clean residue from PCBA's. Can this be
achieved with water washer and some type of saponifier ? Can anybody
suggest a batch process?

 

Thanks,

Dan

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