Electronics Forum | Wed Oct 06 15:05:25 EDT 2004 | davef
Kyzen gave an excellent paper on the cleaning of residues from a lead-free process at Apex this year: Lead-Free Soldering: DOE Study to Understand its Affect on Electronic Assembly Defluxing; Mike Bixenman, Kyzen Corporation & Dirk Ellis, Steve Owens
Electronics Forum | Wed Oct 27 13:20:47 EDT 2004 | DavidB
We are producing boards with Alpha 591S RMA No-Clean paste and are coating after SMC with Dow silicone ( toluene solvent based) conformal coating. We have experienced several failures due to soft shorts ( electrochemical migration?) We have also obse
Electronics Forum | Tue Nov 02 05:00:28 EST 2004 | jysam
we are using solder paste WS609 and OM5100.Relow oven: forced convection type. For WS609 and OM5100, straight ramp up profile is suitable for low to medium thermal mass assemblies and preheating may be required for high thermal mass assemblies. How
Electronics Forum | Mon Nov 22 10:57:25 EST 2004 | davef
On the dendritic growth over the top of the capacitor: We agree that your capacitor supplier probably did not do a very good job of cleaning process residues from their device. On the metallic fragments under the capacitor: This sounds like solder
Electronics Forum | Wed Dec 01 06:24:40 EST 2004 | Tarheel
I'm pretty sure someone at Siemens can tell me, I just haven't found the right person yet. I've been asking field tech's but those guys never have to clean nozzles so they don't know. I'll forward my question to their main office. I just thought some
Electronics Forum | Fri Dec 03 15:56:47 EST 2004 | Indy
Hi Everyone, Could someone please tell me - What happens if a N-type connector having chromate coating over silver plating is hand soldering to a PCB. Does the Chromate coating form a compound with silver, Or does it come off while cleaning excess
Electronics Forum | Wed Dec 08 06:50:07 EST 2004 | Scott B
Have been trying to cut through Paste supplier 'Qualification' documents and sales blurb but when asked if they'd put their mortgages on the line, assurances are harder to come by. In God we trust - All others must provide data. Are there any previo
Electronics Forum | Tue Mar 15 13:24:44 EST 2005 | pjc
There is equipment available to clean NC residues off low standoff devices, well below 0.8mm (0.031"), from Speedline Technologies- Electrovert and Accel. See this paper under Accel: "High Reliability Underfill Performance through Proper Flip-Chip D
Electronics Forum | Fri Dec 17 13:33:41 EST 2004 | carln
I agree, some will and some (most) won't. Your term "VOC free" was misleading. In any case, many of us have total VOC emissions to be concerned about and we cannot afford to bring in any additional VOC products. I even had to switch my stencil cl
Electronics Forum | Tue Jan 11 14:16:31 EST 2005 | jdumont
Thanks for the suggestions...The unit was just cleaned last week and all the sludge was removed so that shouldnt be it. As for the concentration, im not sure. The only water that has gone into the evap is the rinse water. So im not sure if that could
