Electronics Forum | Wed Apr 11 19:32:39 EDT 2001 | Adam
I'm trying to find information/articles describing the effects of temp and humidity on solder paste. Just recently we have gone through a change outside temperature and humdidty and have notice solderabilty problems with smt boards.
Electronics Forum | Thu Apr 12 02:30:18 EDT 2001 | zam_bri
Thanx for your valuable feedback,Eric. Do you mind sharing with me the pad size change that you have made. I mean from what size to what size. I'm measuring mine now...cheers
Electronics Forum | Sun Apr 15 23:12:00 EDT 2001 | Eric Chua
The size i had changed from 55 x 20 mils to 42 x 20 mils. The component size i have is 40 x 20 mils ( 1mm x 0.5mm ).
Electronics Forum | Thu Apr 12 15:16:35 EDT 2001 | Rex Breunsbach
Profiles design is primarily determined by oven geometry, paste specifications and component thermal limitations. This means that no one "standard" profile exists for all production. A free profile planning utility can be quickly downloaded from
Electronics Forum | Thu Apr 12 22:35:42 EDT 2001 | davef
Consider the profile recommended by your solder paste manufacturer to be the starting point to begin tailoring ramp rate, dwell times, and temperature excursions to meet the requirements of your boad design, the capabilities of your components, and t
Electronics Forum | Wed Apr 25 10:47:11 EDT 2001 | mike weekes
Can you recommend a good material to put in the cleaner for both water soluble AND no clean residues? Mike mweekes@phoeintl.com
Electronics Forum | Fri Apr 13 13:45:25 EDT 2001 | gsmguru
Just a guess-- Could you be seeing the nickel under the gold plating because you are removing some of the Gold with the Kapton Tape ? This should be easy to verify. Otherwise it sounds like things are pretty much covered.
Electronics Forum | Fri Apr 13 18:11:07 EDT 2001 | Pat Copeland
Does anyone out there use this chip. I have been searching the world for them. If you can spare any at all, please e-mail me. If not, where are the best sites to search for excess smt components. Thanks Pat Copeland
Electronics Forum | Mon Apr 16 14:33:50 EDT 2001 | dason_c
Consider to use micro via 10 mil or less, it may help to prevent any solder/flux reflow to the other side and affect your next printing operation. Also, solder void need to be under consideration. Dason.
Electronics Forum | Mon Apr 16 17:36:25 EDT 2001 | steveb
Does anyone know of a reason, other than visual, contact, or testability, for cleaning a no-clean residue off a board? Are there any SIR or long term reliability advantages to cleaning a no-clean residue?
