Electronics Forum: ensolv & ipa (Page 1 of 27)

cleaning in Ensolv Ionic vapour degreasing solvent

Electronics Forum | Tue Mar 15 10:18:15 EDT 2011 | grahamcooper22

Hi, Does anyone have any experience of cleaning lead free solder paste residues off pcbs in a vapour degreasing process using Ensolv Ionic ? Any guide as to the best cleaning cycle would be appreciated. thanks

cleaning in Ensolv Ionic vapour degreasing solvent

Electronics Forum | Thu Mar 17 15:34:35 EDT 2011 | grahamcooper22

Dear Rick , thanks for your reply. It is very helpful. I'll get chance to try the Ensolv in a lab next week to see if we can remove the paste residues. Thanks again

Flux Removal from IC for Re-work

Electronics Forum | Mon Dec 07 12:01:35 EST 2009 | mikesewell

Alcohol won't do much for the rosin residue, you'll have to scrub which isn't good on your QFP. Can you clean the assemblies before removal? A solvent such as Ensolve or Axarel would be effective on rosin.

Vapor/ensolve flux cleaning

Electronics Forum | Wed Apr 28 14:52:03 EDT 2010 | davef

When we hear the words 'flexible circuit' and 'delamination' in the same sentence, we think: * Excessive reflow temperature. * Entrapped moisture. Boardhouse: I hope this is a step towards redemption.

cleaning in Ensolv Ionic vapour degreasing solvent

Electronics Forum | Thu Mar 17 09:53:20 EDT 2011 | rperkins

Hi Graham, I've worked in the industry selling EnSolv, Lenium, and now ENTRON solvents, which are all based on stabilized NPB. These solvents do not always clean the no lead pastes. The problem is that the pastes are becoming more like adhesives,

Vapor/ensolve flux cleaning

Electronics Forum | Wed Apr 28 12:08:02 EDT 2010 | tjg

Our latest designs are flip chip on flex based and we have issues with delamination/blistering. We know it is related to our vapor solvent (n-Propyl Bromide based) attacking an inner layer adhesive. Has anyone else ever heard of something like this?

Immerging the PCBA into IPA(temperature:60C) for 1 hr

Electronics Forum | Sat Oct 20 14:24:16 EDT 2012 | davef

Not sure why you'd want to immerse an assembled board in 60-70*C IPA for an hour, but I doubt there is much published material on the topic * IPA is toxic * IPA is flammable at room temperature and heating IPA to 60-70*C only makes it more so * There

Contamination

Electronics Forum | Tue Aug 15 20:41:54 EDT 2006 | davef

Alpha UP78 was a modern solder paste. Check with your supplier for recommendations. You're are cleaning some flux residue with the IPA and reducing the leakage current. We're not wild about using IPA. Problems with IPA are: * IPA / material being

Testing effect of non-clean flux residue on solder joints

Electronics Forum | Fri Nov 03 11:30:29 EDT 2017 | davef

regarding dwl comment, "For low volume hand assembly, deionized water or IPA should work fine." Deionized water: Deionized water is corrosive. It needs to be removed. Proof? Drop a copper coin into a covered jar of DI water and watch what happens ov

Removal of No-Clean flux residue

Electronics Forum | Fri Sep 07 21:43:40 EDT 2001 | mugen

Hi, We use IPA and Prozone, if IPA is so drastically detrimental, to the pcba's.....what suggested alternative, can you please recommend, as IPA replacement? Thanks.

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