Electronics Forum | Tue Jun 29 14:33:49 EDT 2004 | fmonette
This is an active item of discussion for the upcoming revision of J-STD-033. Most likely the bake table 4-1 will be modified to include guidelines for level 2 components. Francois Monette Cogiscan Inc.
Electronics Forum | Thu Aug 12 18:06:09 EDT 2004 | SR
May I ask what component types you are using and who the suppliers are? FYI - If the components have exceeded their shelf life, they may have oxidized too much for soldering using low activity fluxes. Thanks and best regards, SR
Electronics Forum | Thu Jul 29 21:19:09 EDT 2004 | davef
You need: * Solder that is active enough to made those leads take solder * Reflow recipe that makes the most of the flux is the paste The flux in neither of your solder pastes is getting done.
Electronics Forum | Mon Sep 27 12:06:59 EDT 2004 | Peppe
Hi, I work in telecom area and I'm looking for an answer about the reliability of BGA soldering and also the value of Activation Energy for the BGA soldered on PCB, to be used in Arrhenius acceleration model. Please could help ? Many thanks in advan
Electronics Forum | Mon Nov 08 15:28:54 EST 2004 | davef
If SMTnet posts listing from "Active threads from last 14 days", why are there listings from July still on the Forum?
Electronics Forum | Tue Nov 09 12:41:31 EST 2004 | alanhayllar
What thermally conductive glues are available to glue Luxeon Lumiled parts down? Are single part glues without an activator available, suitable for screen printing or dispensing? Many thanks
Electronics Forum | Wed Nov 10 04:51:15 EST 2004 | alanhayllar
That's great - thanks for the advice on the epoxy's. Can anyone provide any info on the single part thermally conductive adhesives or fillers that do not require an activator? Mant thanks.
Electronics Forum | Wed Jan 05 18:34:06 EST 2005 | russ
From what I have read so far the temps are, if not close to being the same for both alloy formulas. Preheat is a function of flux activation and thermal shock. Solder temp varies from place to place. Russ
Electronics Forum | Fri Feb 18 11:30:27 EST 2005 | austinj
Thanx aj and Russ. I will verify my ramp up/down degC/sec and the soak zone peak temp. Fluxes could be burning off prior to activation. I have found access to an old thermal data logger to help verify the Heller thermocouples. I will post updated fi
Electronics Forum | Thu Mar 10 13:05:41 EST 2005 | patrickbruneel
This phenomenon is caused by a high amount of halogens (Cl, Br etc.) used in the flux activators or in the flux surfactants. We've seen effects creating all colors of the rainbow. Changing to No-Clean (halide-free) will eliminate this color effect.
