Electronics Forum | Mon Dec 02 16:01:15 EST 2002 | russ
If you can, attach athermocouple to the locations where you are getting solder balls. A previous product I had showed the same thing and we found that we had inadequate preheat leaving the liquid flux to splatter when it hit the wave. It could aslo
Electronics Forum | Tue Dec 03 18:31:45 EST 2002 | slthomas
At the price of Durapol we'd never get the OK to have them made. The Al fixtures are cheap and a quick turn local item. As dense as the pth parts are I also don't think there'd be any room for any holes which I really think is the answer as far a
Electronics Forum | Mon Dec 16 19:05:57 EST 2002 | davidduke
Steve , I agree with all the responses you have received. Randy Villeneuve is absolutly correct in all of his assesments and I would consider him an expert with the process , Gris is correct about adding a "heat sink" to the process complicating pr
Electronics Forum | Wed Jul 20 16:08:34 EDT 2005 | grantp
Hi, I think the comment about the board height is because the MYDATA checks the board height each time it loads a tool so this is eliminated from being an issue because the machine knows the PCB height. I don't think it's so much what height the PCB
Electronics Forum | Wed Jun 19 20:26:05 EDT 2002 | ianchan
mebbe you can try to Kapton Tape the nearby gold pads that are seeing the solder splatter? this is no root cause elimination and for meantime avoidance of solder splatter cleanup, hope this idea can help get your boards accepted by your OQC.
Electronics Forum | Tue Apr 19 16:20:05 EDT 2016 | davef
Don't blame it on the poor paste thickness requirement [although I might go on to argue that it's could be a contributor to the issue]. Most likely you're the problem. About 70% of the time solder on gold fingers is caused by poor cleaning of screen
Electronics Forum | Thu Jun 13 11:29:18 EDT 2002 | davef
An ounce of prevention is worth a pound of cure. Why not figure-out and correct the cause these solder splatters? Let�s talk about what�s going on here. Tell us about component, near-by components, solder, bare board, soldering method, process, et
Electronics Forum | Thu Jun 13 08:14:23 EDT 2002 | edahi
any of you guys got any ideas to clear up this stuff of the package surface?? I know this is just a cosmetic defect but one of our packages get splatters on the marking area so this is something I have to fix... inputs are very much welcome...
Electronics Forum | Fri Feb 08 16:21:15 EST 2013 | spitkis2
Are you doing this to minimize solder paste splattering? Is this a value that you use for all QFN's (would the overall size of a QFN matter)? I was told reducing placement force with these components is recommended so just was wondering what is bein
Electronics Forum | Tue Jul 15 15:46:05 EDT 2008 | slthomas
Can you describe your solder balls...mid-chip solder balls, "splatter" around pads, etc.?
