Electronics Forum | Tue Feb 06 13:16:09 EST 2007 | jaimebc
Leaded paste, is what we use if the process or product requires it.
Electronics Forum | Wed Feb 07 21:54:45 EST 2007 | davef
That's a peculiar temperature range for your cycling. What are your ramps and dwells?
Electronics Forum | Thu Feb 08 08:20:52 EST 2007 | mzaboogie
tjc, Is this pin connected to a heavy conductor or ground plane? Chris
Electronics Forum | Thu Feb 08 08:33:08 EST 2007 | jdumont
Most likely ground plane stealing your heat. Increase dwell slightly if you can.
Electronics Forum | Thu Feb 08 09:41:23 EST 2007 | SWAG
Check the bare board - could also be an unmasked via on the heel of the pad that is sucking solder into it.
Electronics Forum | Thu Feb 08 22:27:45 EST 2007 | davef
What is the measured temperature on: * Pin 1 * Pin 18
Electronics Forum | Fri Feb 09 06:08:36 EST 2007 | mzaboogie
Thank you so much for your input. Greatly Appreciated. Thanks Chris
Electronics Forum | Tue Feb 20 03:46:11 EST 2007 | Rob
Cheers Dave, it appears to have worked. The downside is that now the work e-mails can get through....
Electronics Forum | Tue Feb 20 05:30:21 EST 2007 | Rob
...OK it didn't. Loads more SAC305 Spam
Electronics Forum | Mon Feb 12 01:21:42 EST 2007 | Joe
yup, current SAC has a lot of problem with large BGA balls. Just like Wayne explained earlier.
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