Electronics Forum | Thu Nov 10 10:45:32 EST 2011 | aqueous
The use of IPA in automated defluxing systems is nearly extinct for the following reasons: 1. IPA is flammable. In a spray-in-air environment, the already low flashpoint is even lower. 2. IPA is not a great solvent. There are specific containme
Electronics Forum | Tue Aug 31 18:34:32 EDT 2010 | aqueous
If the batch cleaner is truly closed loop, then 100% of all of the process fluid (water) is captured, filtered (particulate, carbon, resin) and reused. This answer is based on a traditional closed-loop batch cleaning system with an integrated water
Electronics Forum | Tue Jul 13 01:00:03 EDT 2004 | Shean Dalton
Cleaning RMA fluxes simply requires selecting a washing chemistry (either Solvent, Semi-aqueous or Aqueous) and an appropriate cleaning sytem. Your lot size would be easily handled with a batch system. visit http://www.aat-corp.com/Technical/Def
Electronics Forum | Wed Sep 10 11:57:14 EDT 2003 | Mike Konrad
First, you must determine a few things: 1. What specific de-fluxing chemical are you going to use? Basic required determinations include the chemical�s pH, is it a VOC (if so, what is its VOC content), what concentration is the chemical used in (1
Electronics Forum | Fri Jan 04 15:06:07 EST 2002 | davef
Been rootin' through my card file. Other sources I'm aware of, but can not substantially comment on are: * DI water generators: Unit design 714.282.8100 fax8188 * Remco Engineering: modular ion exchange systems * Advanced Separation Technologies: co
Electronics Forum | Fri May 25 00:31:07 EDT 2007 | Mike Konrad
Never use a water softener for defluxing. They add sodium to the water which is bad for boards. The white residue may be flux. If that's the case, either the dishwasher is not powerful enough or the wash water is not hot enough. Another possibili
Electronics Forum | Mon Nov 24 11:24:34 EST 2003 | Bill
Sorry for the long delay in response.. As it turns out, the float switch on our transfer station was gummed up (probably by the defoamer residue) and allowed the transfer station to get behind (backing up the gravitational flow of the wash system).
Electronics Forum | Mon Jul 10 21:01:06 EDT 2000 | Dave F
Edmund: Responding to your questions: 1 What is purpose of using DI water to wash a PCBA? Compared to tap water, DI water is less likely to leave: � Metal cations on sensitive components. � Salts of Ca, Mg, and other stuff on metals on the assemb
Electronics Forum | Fri Oct 12 14:32:52 EDT 2001 | Mike Konrad
Hi, Maybe Yes� Maybe No� Actually, it most likely is acceptable to clean assembled boards in an ultrasonic cleaning system (40 kHz). There are some concerns in some circles about possible damage to wire bonds in components. There have been publi
Electronics Forum | Sun Feb 13 15:23:03 EST 2005 | Mike Konrad
There are several manufacturers of batch-format de-fluxing systems. Here is a list of them: Aqueous Technologies http://www.aqueoustech.com (909) 944-7771 Batch and Inline UnitDesign http://www.unitdesign.com (714) 672-9944 Batch Austin American T
