Electronics Forum | Thu Dec 16 09:59:47 EST 2004 | saragorcos
Hi there - unfortunately, there are no good cleanliness specs available mainly because clealiness requirements are case sensitive - you should talk to Terry Munson at 765-457-8095 - he can definitely give you advice on Ion Chromatography, SIR, ROSE t
Electronics Forum | Tue Sep 25 20:33:02 EDT 2007 | davef
We vote for: IPC-TM-650 2.3.25.1, solvent: 80�C, extract time: 60 minutes, hold time: 30 minutes or until room temperature. Listen, it really doesn't matter which method you decide to use. IPC-TM-650 2.3.25 is a process control method. It's more imp
Electronics Forum | Sat Sep 29 22:56:13 EDT 2007 | asoelu
the vary results might be from following issues.. the co2 during the test the during time for this testing... the manual testing method is conductivity measurement however the bulk contamination tester like omega is resistance measurement (i remem
Electronics Forum | Fri Dec 10 12:24:46 EST 2010 | davef
Causes of dewetting in conformal coating. Factors that influence dewetting usually involve non-ionic contamination such as: * Residues from board manufacture including silicone surfactants from solder resist & HASL rinse contamination * Component res
Electronics Forum | Fri Aug 14 10:26:55 EDT 1998 | Mike Konrad
5 micrograms per sq. cm. is actually not too clean. The maximum military allowed post-clean, on-board contamination is 5.7 micrograms of NaCl /cm squared (when using the Zero-Ion brand ionic contamination tester). We are use to seeing cleanliness re
Electronics Forum | Mon Oct 06 16:18:30 EDT 2003 | pjc
If the flux is already eating thru Cu it must have been some time since the boards were soldered with the OA flux. Ionic contamination testing (with OmegaMeter or IonoGraph)can be done to find contaminated boards and cleaning the boards can be done
Electronics Forum | Tue Jan 29 13:51:24 EST 2008 | bbarton
Dave F....BOGUS BOGUS BOGUS What compatability issue could there possibly be if the flux is removed during wash???? Why on EARTH would you leave ANY WS flux residue on the board? A recipie for disaster! Beef up the cleaning process, test for contami
Electronics Forum | Fri Nov 05 09:52:44 EST 1999 | Dave F
John: Three things: 1 You are correctamundo!!!! What's the difference between slopping alcohol on dirty boards and washing dirty boards? Clean boards!!!! By the time those very nice people get done with their alcohol cleaning (a nip for the boar
Electronics Forum | Tue Oct 22 16:30:50 EDT 2013 | joeherz
Dear Lord, We have had similar challenges with customer requirements related to ionic testing. You have determined that you cannot get a reliable result from testing at the stage where the adhesive has been applied. That option is out. Assuming
Electronics Forum | Thu Aug 17 16:12:48 EDT 2000 | John Maxwell
We are using a water wash paste for our boards which is leaving ionic contamination ( salts). In the presence of low humidity levels this creates the effect of a capacitor. Our product which is test instrumentation does not calibrate. I am lookin