Electronics Forum | Fri Aug 19 07:40:24 EDT 2011 | scottp
What do the heel fillets look like and what level of IPC-610 (class 1,2, or 3) are you working to? Do the joints on all 4 sides look bad or just the one side? Do other parts on the board look OK?
Electronics Forum | Sat Aug 20 05:56:44 EDT 2011 | leadthree
I will try to get a pix for heels. Normal IPC standard Yes, all for sides are the same (ignore the little misalignment, usually that is fine). I wonder if the IC is maybe too lite and 'swims' on the liquid tin and if it would help to put some weig
Electronics Forum | Mon Aug 22 06:33:43 EDT 2011 | janz
try to use stencil with "home plate" (arrow head) shapes of appertures for chips components. Any supplier of stencil can support you with this kind of design. janz
Electronics Forum | Mon Aug 22 11:00:04 EDT 2011 | emeto
This problem means that you have too much paste. I would design a new stencil with reduced apertures. Emil
Electronics Forum | Tue Aug 23 08:13:03 EDT 2011 | ryanr
There are only two (2), but the qty and size do not really prohibit hand soldering and we would still need to clean around their leads manually to meet the cleanliness spec.
Electronics Forum | Tue Sep 18 20:50:35 EDT 2012 | vergara1
ATTENTION*****Sorry I missed informed you on the second tip; tip should be set at 399C/750F.******** Melissa
Electronics Forum | Wed Aug 24 10:24:33 EDT 2011 | bobsavenger
Yeah, we use the Mole also for setting up a new build but I was wondering about a quick validation. Thanks for your input.
Electronics Forum | Wed Aug 24 16:30:10 EDT 2011 | hussman
Low and behold, the answer has been found. I guess 2512 parts are not used inthe automotive wolrd due to the fact that they crack during thermal cycling!
Electronics Forum | Fri Aug 26 10:11:55 EDT 2011 | blnorman
Back in my automotive days, we'd always include 2512's in our test assemblies because of their infant mortality.
Electronics Forum | Tue Sep 06 09:47:12 EDT 2011 | dyoungquist
We use a 40mil circle with the solder mask backed off another 40 mils (120mil circle) beyond that. Works good for us but not sure if that is an industry standard or not.
