Electronics Forum | Tue Aug 22 12:25:14 EDT 2006 | slthomas
Some university you went to, Rob. You can't even spell "old". ;)
Electronics Forum | Fri Aug 25 08:22:20 EDT 2006 | Chunks
One big pad, one 50% app in the stencil.
Electronics Forum | Tue Aug 22 10:31:15 EDT 2006 | aj
All, Is it possible to wave solder the following component? http://www.national.com/packaging/folders/src14a.html aj...
Electronics Forum | Tue Aug 22 12:44:28 EDT 2006 | russ
Cannot be done, no way to solder the heat pad underneath center. P.S. Rob also spells color wrong!!! must have been a real bad school!! How does the wave master do it? Russ
Electronics Forum | Tue Aug 22 11:44:12 EDT 2006 | slthomas
Without having tried it, I'll be the first to say I don't know how you could, and I would have no trouble at all telling my management absolutely not.
Electronics Forum | Tue Aug 22 16:32:17 EDT 2006 | aj
I did not think it was possible but I just thought I would ask and save me some time. Cheers, aj...
Electronics Forum | Thu Aug 24 08:46:15 EDT 2006 | Chunks
I too had to reduce by 50% because of floating (0.006"). But, most recommendations are for pads with via perforations. So if you are mounting to a flat pad, reduce even more.
Electronics Forum | Thu Aug 24 08:47:32 EDT 2006 | russ
We reduce 50% on that pad and achieve excellent results as well. Have placed somewhere in the hundreds of thousands of these (one board we have has 75 alone!!!) We do nothing special for other pads. Russ
Electronics Forum | Fri Aug 25 07:36:13 EDT 2006 | davef
We'd do it the same way that you did, except apply no solder mask over the heat slug.
.gif)
winsouce.jpg)