Electronics Forum | Fri Mar 19 11:48:06 EST 2004 | Ken
This is the dilema during this transition period. Here is a tip: If you see typcial solder joints on a lead free process, but only on one component type....it probably has a significant quantity of lead in it (ex. Sn90/Pb10...and so on) If using T
Electronics Forum | Mon Dec 21 05:12:35 EST 2015 | jsolloway
Calling all Metcal users.... I am trying to get an idea of the expected tip life of a given Metcal solder tip and I am met with the generic response of "there are too many parameters" to give such a number, either in average number of solder joints
Electronics Forum | Wed Apr 18 20:55:20 EDT 2001 | davef
Yins are bad, this guy's serious. Generally, solder pastes are comprised of: 90% solder powder, 5% flux, 4% solvents, and 1% activators [by weight]. Where: * Solder powder, when reflowed, is a metal bonding agent that mechanically and electrically
Electronics Forum | Fri Oct 08 14:01:27 EDT 1999 | C.K.
We've recently encountered this problem where one of our .050" pitch BGA's were reflowing at the wave thus causing shorts... The board was profiled with probes stuck to a QFP solder joint, an 0603, and one of the BGA joints. There was an almost 70
Electronics Forum | Wed Jan 04 15:10:27 EST 2006 | grantp
Hi, That's the main problem. I quickly checked out the motorola document, and thanks for posting that, but the main reason for failure seems to be that the ball is not touching the solder pad. I wonder what kind of ball size tolerance they had on th
Electronics Forum | Mon Mar 13 10:45:44 EST 2006 | muse95
The original issue was Co. does not need to go Pbfree, but some BGA's they use are only available Pbfree. They don't want to throw away Pb BGA stock, so some boards might have a combination of both Pb and Pbfree BGAs. The question basically was Shou
Electronics Forum | Tue Jan 15 16:44:54 EST 2008 | gregoryyork
I found some machine manufacturers put convection nozzles in line parallel with each other instead of staggering them so you get a nice parallel line up the board where there is no flux be it no residue alcohol or VOC Free. The best I could find was
Electronics Forum | Tue Jun 16 15:13:31 EDT 1998 | Bob Willis
There have now been over 100 people take the quiz and the best scores have been in the Dallas area. Keep it up and what about the European visitors ? | Here is a chance to test your knowledge on reflow soldering twenty questions you should know abou
Electronics Forum | Tue Jun 16 15:13:13 EDT 1998 | Bob Willis
There have now been over 100 people take the quiz and the best scores have been in the Dallas area. Keep it up and what about the European visitors ? | Here is a chance to test your knowledge on reflow soldering twenty questions you should know abou
Electronics Forum | Fri Jun 08 11:35:16 EDT 2007 | patrickbruneel
80-90% of an average SM component is non wetable (pushing away solder). So if you would use a single smooth lambda wave (massive amount of molten metal) the negative force of the non-wetable part of the component would be so high that the solder wou
