Electronics Forum | Fri Apr 09 15:00:04 EDT 2010 | davef
So for your SMT1/SMT2/PTH boards, you have poor solderability during SMT2. [Even if you have no SMT2 and only ST1/PTH, our answer is the same.] We assume this occurs on one board part number only. We guess that your bare boards have insufficient gol
Electronics Forum | Fri Nov 19 05:12:21 EST 1999 | Graham Naisbitt
Steve, If you can get me your snail-mail address, I will send you some latest information. We actually have a totally new system called Delta 5. It is Condensation Soldering rather than Vapour phase, the difference being that we solder in an air ti
Electronics Forum | Fri Apr 02 01:10:01 EST 2004 | Grant Petty
Hi, We tried that, as the Soltec has a spray fluxer that can flux just the connector part of the board, however we get really heavy solder deposits on the rest of the board that has no flux sprayed on it, so we seem to need to coat the entire board.
Electronics Forum | Mon Jun 20 21:54:38 EDT 2005 | darby
Contact your paste supplier and see what they say. My information on SAC 305 FROM MY SUPPLIER was - "The cool down rate is not as critical for Pb-free solder joints, as it was for SnPb. The grain sizes do not differ is size in the Pb-free bulk solde
Electronics Forum | Wed Aug 09 07:32:11 EDT 2006 | mumtaz
The curled legs may push the paste out of the hole, making things messy. This also will decrease your volume of paste which means your solder joints are not as robust as you would like. Also with this process, voiding can be a big issue depending o
Electronics Forum | Fri Mar 18 13:42:02 EDT 2011 | kahrpr
First thing try a different solder paste. All solder pastes are not created equal. Also if everything else on the board looks good then check the part. As far as nitrogen goes its about 4 bucket loads you need an external tank. I have seen some marg
Electronics Forum | Thu Mar 21 16:45:31 EDT 2013 | dyoungquist
We have been using a Heller 1707EXL (7 zones + 1 cooldown zone) for lead free (ROHS) soldering since 2007 with good results. I wouldn't go any lower than 7 heat zones though. If I may brag a bit....The IPC-7095 revision C standard was released a fe
Electronics Forum | Mon Oct 12 15:51:47 EDT 2015 | davef
IPC-A-610E-2010, Acceptability of Electronic Assemblies, 8.3.4 Castellated Terminations talks to the acceptability of solder connections on components like yours. It’s tough to say from the pictures, but I’d say your issues are: Missing solder: Plat
Electronics Forum | Tue Feb 09 13:07:00 EST 1999 | ETS - Brian Stumm
By double reflow are you referring to double sided reflow? Or are you referring to reflowing twice? | I would like to have information about the processability of different packages. | In particular I would like to known for which package I can use
Electronics Forum | Wed Aug 09 08:59:52 EDT 2006 | zanolli
I agree with verifing this part is even high temp reflow compatible. The age of the original dwg release, 1986, and as there is no mention of high temp reflow compatibility, only a mat'l call out of nylon, leads me to think it is not.
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