Electronics Forum | Mon Jul 16 08:42:14 EDT 2007 | realchunks
Hi Scott, Here is another thought. Check your wave solder machine visually. Does the wave flow on both sides of the nozzle? If not, you may have some dross build-up which may be causing your problem. Generally it will only happen on the very fir
Electronics Forum | Fri Jul 13 12:20:33 EDT 2007 | jdumont
There are a lot of areas that could be leading to this problem. We have some of these issues on some boards with this solder as well but the hole fill still meets IPC class 3 requirement of 75% vertical hole fill. Through hole diameter is important.
Electronics Forum | Tue Jul 17 09:49:21 EDT 2007 | slthomas
We haven't used no-lead yet so I can't speak to the specifics of that part of the equation, but am I the only person here that sees "thick board or a board with a large ground plane" and immediately thinks this is a thermal issue? Am I oversimplifyin
Electronics Forum | Thu Jul 19 17:22:17 EDT 2007 | gregoryyork
You need to dwell the boards longer in the wave as the board is the largest heatsink. Just make sure the flux can take the longer dwell times anything up to 4 - 5 seconds so you may have to shallow your angle as well to around 5 - 6 degrees this will
Electronics Forum | Mon Jul 16 09:53:36 EDT 2007 | ed_faranda
Yes, you can use lead-free parts in a leaded process. And the other is true as well, no-lead free parts in a leaded process. BUT, you should not use leaded parts through a non-lead wave solder process and of course, your board will not be RoSH.
Electronics Forum | Mon Jul 16 10:26:54 EDT 2007 | davef
Ed: We agree with you that leadfree parts can be used with leaded paste. We disagree that lead part can be used with leadfree paste. Here is link to a previous discussion here on SMTnet on the topic: http://www.smtnet.com/forums/Index.cfm?CFApp=1&M
Electronics Forum | Fri Jul 20 11:48:22 EDT 2007 | muse95
I agree with Chris. Not all but SOME components definitely had to change to be able to withstand higher heat. I would watch out for some plastic connectors, possibly some active components, and definitely many electrolytic caps. Older stock compone
Electronics Forum | Fri Jul 20 13:18:54 EDT 2007 | samir
You know the old addage, "Those who can't do teach." From my own experience with some of these "well-known consultants", they know lots of textbook theory, and..they speak in buzzwords and cliches (just like their magazine articles). I'm not saying
Electronics Forum | Tue Jul 17 11:08:47 EDT 2007 | jdumont
Morning all, I have been tasked with finding a semi automatic placer for our engineering dept to run 1-5 piece prototypes on. Vision capabilities are necessary. Can anyone help steer me in the right direction for this... Nothing exotic would be place
Electronics Forum | Wed Jul 18 06:47:38 EDT 2007 | cyber_wolf
I was asking if it was a TP9 2U...... If you have a UFP machine then you are in luck. It is most likely the small X-motor. You can test it in the service program. Does the X-axis bounce when you are trimming magazines and stepping through placement
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