Electronics Forum: ipa and di water (Page 1 of 4)

White residue after cleaning with IPA

Electronics Forum | Mon Feb 03 11:17:55 EST 2003 | Randy Villeneuve

White residues are a common problem when cleaning no-clean fluxe residues. The white residue forms when the flux residue is partialy removed, etc. Alcohol should not be your only solution for cleaning. In general, solvents may attack some plastic par

Using isopropanol with DI water for rinsing after washing boards

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

Using isopropanol with DI water for rinsing after washing boards

Electronics Forum | Thu Nov 10 10:42:55 EST 2011 | davef

While you're waiting for others to reply, search the fine SMTnet Archives for similar threads. For instance: * Batch cleaners http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=49334 * Use of IPA as a cleaning agent http://www.smtnet.com/Foru

Water soluble flux

Electronics Forum | Tue Oct 22 14:57:18 EDT 2002 | Jim M.

I use a water soluble flux to solder an LCD into gold plated through holes of a .031 circuit card. Problem is the current water soluble flux (850-33) is not made anymore (the drop in replacement has a different formuala and does not work). The main i

baked on water soluble flux residue betwwen fine pitch comp.

Electronics Forum | Fri Dec 01 14:12:50 EST 2000 | Jim M.

My company currently uses water soluble paste for our SMT process. We were having trouble retaining hot water in our in line, closed loop DI cleaner. The cleaner kept shutting down when the water temp. dropped below 125C. As a result, the conveyor


Electronics Forum | Tue Nov 09 11:42:37 EST 1999 | Dave F

Jeff: Try this: ROSA. John�s spot on. I�ll add that it is a fluxless method that reduces the oxides in an aqueous solution. Another source of information is: Trench, M., Hillman, D., Lucey, G., "Environmentally Friendly Closed Loop Soldering,"

Necessity of ROSE in commercial quality processes

Electronics Forum | Sun Feb 26 21:48:28 EST 2006 | Mike Konrad

Hi GS, Just a clarification� No-clean does NOT equal no ions. It equals less ions (at best). Automatic R.O.S.E (Resistivity Of Solvent Extract) testers are commonly used to detect ionic contamination from no-clean applications. Your comment rega

Testing effect of non-clean flux residue on solder joints

Electronics Forum | Fri Nov 03 15:43:20 EDT 2017 | dleeper

IPA and DI water are both very common and effective methods of cleaning PCBAs. http://www.zestron.com/sa/cleaning-applications/smt-electronic-cleaning/pcba-cleaning/aqueous-cleaning.html http://blog.gotopac.com/2010/11/18/ipa-as-a-universal-cleaner

Wave Solder, Flux density measurement?

Electronics Forum | Wed Feb 01 09:26:39 EST 2006 | pjc

Density is an "implied" measurement to determine activity. Most flux suppliers can sell you a flux acidity (activity) measurement kit. I used one from Multicore a few years back. We used it once in the morning and once after lunch to monitor no-clean

Machine ICOM 5000

Electronics Forum | Wed Dec 05 23:31:12 EST 2012 | aqueous

This is a (Resistivity of Solvent Extract (ROSE) tester. Per IPC standards, ROSE testers use a test solution comprised of 75% IPA (99% pure) and 25% DI water. -Mike Konrad Aqueous Technologies www.aqueoustech.com konrad@aqueoustech.com

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