Electronics Forum | Wed Apr 30 07:33:12 EDT 2008 | davef
It's not acceptable to us. More importantly, you need to determine if it's acceptable to your customer. Recognize that your little IPA scrub does NOT remove the OA flux residues from the board. It mearly spreads them out across the board and under c
Electronics Forum | Tue Oct 13 18:28:51 EDT 1998 | Graham Naisbitt
Upinder, Using IPA does not cause the residue, it simply exposes it. Given that all fluxes leave reisdues, it follows that these MUST be benign - but how do you know, and how do you control it. You are using flux to remove oxides and give you a go
Electronics Forum | Wed Feb 26 23:59:48 EST 2003 | Mike Konrad
Grant, No-Clean paste + IPA = White Residue! #1: Stop using IPA #2: Switch to either a solvent-based de-fluxing chemical or an aqueous-based de-fluxing chemical. If you are using an ultrasonic cleaner for your boards as stated, do not use sapon
Electronics Forum | Tue Oct 13 17:30:09 EDT 1998 | Upinder Singh
| All Y'll | | How do you clean components that must be added to an assembled board after water wash? | | BACKGROUND | | Our basic process goes like this: | | 1 Print paste with OA flux, place, reflow, wash | 2 Repeat 1 | 3 Insert PTH, OA flux
Electronics Forum | Sun Feb 26 17:40:35 EST 2006 | GS
Hi, just my comment, theoretically No Clean means no Ion Contaminants from Flux, but it some some case ion contamination (Cl-Br-F) could come out from raw PCBs, from Components, from fingerprints, etc. To incorporate a ROSE step in the pro
Electronics Forum | Tue May 16 15:30:07 EDT 2006 | George
Hi John, Are you talking about cleaning the pallets after running to store them? or during production? well in any case...I recently started to use this cleaning solution "Cybersolv" from Kyzen. It is water soluble and also can be used instead of IP
Electronics Forum | Thu Aug 07 17:25:11 EDT 2008 | jlawson
With Laser centering nozzle condition in terms of slider shafts have to return to same position every time. Please check condition of nozzle and make sure slider extends to full position. If slider sticks it can generate errors as the component appea
Electronics Forum | Fri Jan 14 12:20:12 EST 2011 | SheanDalton
There is a lot of information available about cleaning no-cleans. Takes chemical, mechanical and thermal energy. Find the right chemistry for the flux (not something like IPA that will most likely just smear the residues around and cause problems
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
Electronics Forum | Tue Aug 01 22:04:11 EDT 2006 | davef
Problems with IPA are: * IPA / material being 'cleaned' combination still needs to be removed from the board. * IPA and empty containers are a hazardous material by RCRA criteria (40CFR 261) * Flash point (~12*C TCC) of IPA is low enough that all ele
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