Electronics Forum | Wed Aug 19 03:33:45 EDT 2009 | rocko
Pay attention that sometimes the ultrasonic energy may damage ICs.
Electronics Forum | Wed Jul 29 10:46:04 EDT 2009 | babe7362000
I was wondering if anyone knows the best way to clean oxides off of fine pitch components? Apparently the paste we use does not have strong enough flux to remove the oxides off of the leads of the components. I have validated the profile and that i
Electronics Forum | Thu Jul 30 03:34:52 EDT 2009 | babe7362000
The parts are from 2000-2004. The temperature at the leads are between 215-220. When the part is removed from the board, some of the leads are nice and shiny and some have dewetting, so I dont think it is a temperature issue.
Electronics Forum | Wed Jul 29 19:59:46 EDT 2009 | davef
What temperatures did you read on the QFP component leads during reflow soldering?
Electronics Forum | Thu Jul 30 13:52:34 EDT 2009 | davef
Thoughts are: * 215-220 temperature at the leads is not real hot for leaded assembly. * It's peculiar for component leads to dewet. Sometimes non-wetting occurs along the edge of the lead where the lead is not plated. * How do the leads of a removed
Electronics Forum | Wed Jul 29 12:48:25 EDT 2009 | mikesewell
Kester R562 is listed as an ORH0, a high activity flux, not sure switching pastes would gain much. What is the finish on the leads? How old are the parts? You could have the parts reconditioned (SixSigma, Corfin, ...others) but this can get costly
Electronics Forum | Thu Aug 06 19:20:09 EDT 2009 | boloxis
easy, just dip the ICs on a very weak solution of Nitric Acid, by very weak I mean like drops of Fuming Nitric acid in a half full DI water beaker. Place the beaker on a Ultrasonic bath and dip/shake the ICs in the solution in 5~ 10 seconds only. You
Electronics Forum | Tue Apr 20 14:55:19 EDT 2004 | mrmaint
Does anyone out there know of a method to remove oxidation from the balls of a BGA, other than reball. thanks, MRMAINT
Electronics Forum | Fri Oct 10 14:49:21 EDT 2008 | omid_juve
what is the best solder paste type(RA,RMA,R,WS,...) for removing oxidation from the pins of our parts.
Electronics Forum | Fri May 13 20:32:39 EDT 2022 | swilson
Any Suggestions on How to remove oxidation on connector pins. The boards have been sitting for awhile and can't be washed due to transformers and open relays that are on the board.
