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 | Wed Apr 11 22:05:58 EDT 2001 | davef
OA pastes are more hydroscopic than NC pastes. Hydroscopic. The capacity of a material to absorb and retain moisture from the ambient air. Sometimes this is compounded if you remove paste from the frig and let it warm to room temperature, because
Electronics Forum | Wed Oct 10 12:20:44 EDT 2007 | slthomas
Does it fail to function or does it function outside of acceptable tolerances? If the latter I wouldn't know what to think, but if the former I would feel obligated to suspect solder quality or maybe even a component problem with the elevated lead-
Electronics Forum | Thu Jul 16 09:22:18 EDT 1998 | Aaron Delfausse
My question is in regards to how exactly temperature and humidity affect the stencil printing process. If temperatures here at the plant in the summer are 70-73 degrees F. and relative humidity is 60-65%,to what extent will the results of the steci
Electronics Forum | Fri Jul 17 12:49:33 EDT 1998 | Aaron Delfausse
We currently use an ESP RMA paste. The reason that I initially posted the question was because we are conducting tests to see if this is infact the best paste for our processes. In running tests, however, certain variables, such as humidity, are ou
Electronics Forum | Thu Feb 10 09:14:09 EST 2005 | davef
Don't kid yourself, something has changed. * Worn stencils should produce better release and greater paste deposits than less worn stencils. * Consider inspecting the effectiveness of your cleaning process with a X10 magnifier. * Temperature in your
Electronics Forum | Fri Jul 17 11:49:58 EDT 1998 | Justin Medernach
| My question is in regards to how exactly temperature and humidity affect the stencil printing process. If temperatures here at the plant in the summer are 70-73 degrees F. and relative humidity is 60-65%,to what extent will the results of the ste
Electronics Forum | Sat Aug 01 09:19:59 EDT 1998 | Claudio Carnevali
I can explain my experience. I had a no clean paste and in summer I had a lot of problems. Now I have installed and air cooling system and I work with 25�C and 50-55%. I think you'll have less problems but smt problems usually doesn't have only one a
Electronics Forum | Mon Aug 14 15:09:14 EDT 2017 | charliedci
In my experience, in a temperature/humidity controlled environment, 1 hour, no big deal. 4 hours still ok. Overnight your pushing the limits but will probably reflow without issues. Any longer, could be a problem. Again, a lot depend on type of past
Electronics Forum | Fri Aug 17 06:40:27 EDT 2001 | nifhail
Thanx Dave/Hussman.. We normally store our solder paste in the refrigerator at 0-10 Deg C as per what the supplier recommanded. Our floor temperature is controlled at 22 +/- 5 Deg C and Humidity is at 55 +/- 5%. Recently we have customer asking fo
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