Electronics Forum | Fri Jan 08 12:27:55 EST 2016 | aqueous
The most common method is a R.O.S.E tester. They have been around for 30 years and are an industry standard for ionic contamination (flux and other residues) testing. Manufacturers include: Zero Ion www.aqueoustech.com Omegameter / Ionagraph http:/
Electronics Forum | Tue Nov 07 00:33:40 EST 2017 | aqueous
If no-clean flux is reflowed correctly, many of the activators are encapsulated within the resin residue left behind after reflow. An ionic contamination test cannot differentiate between ionic residue that was encapsulated (not harmful) and residues
Electronics Forum | Wed Sep 12 00:18:19 EDT 2018 | aqueous
Here's a link to an article regarding foam mitigation techniques. It my be helpful. There are many causes of foam. Water alone does not foam. Flux, solubilized in to the water can produce foam. Defluxing additives contain defaming agents which should
Electronics Forum | Mon Aug 19 13:32:54 EDT 2019 | aqueous
ROSE testing a post-reflow assembly which has been reflowed using no-clean flux may not yield information that is helpful. No-clean flux technology works by encapsulating the flux's activators and other chemical constitutes that would be harmful if l
Electronics Forum | Sun Aug 29 19:17:34 EDT 2004 | aqueous
Chen, It is always best to place one�s effort on determining the cause and content of the residue rather than trying to work around it. The first thing you must determine is the nature of the residue. Is it flux? In many instances, the residue is
Electronics Forum | Sat Aug 25 00:26:22 EDT 2007 | aqueous
Dave, First of all, distilled water is not DI water. It is not the same thing. If you require DI water, you should know what quality is expected for your application. For example, for defluxing applications, generally DI water quality exceeding
Electronics Forum | Mon Mar 17 18:37:59 EDT 2008 | aqueous
We manufacture both bulk and localized ionic contamination testers. My answer is from the perspective of the cleanliness testing method. The issue with all bulk ionic contamination testers (Ionagraph, Omegameter, Zero-Ion), is that they test the en
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 | Fri Mar 26 13:52:02 EST 2004 | aqueous
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