Electronics Forum | Tue Jan 12 18:33:54 EST 1999 | Jorge L. Torres
I am currently using Alpha WS629. I have a Malcom SPS-1 Solder paste mixer. I find that the mixer after running for the recommended mixing time (10 to 18 Min) ball's the solder in the jar. 1) Is there any other Manufacture having the same prob
Electronics Forum | Thu Aug 16 05:39:43 EDT 2001 | nifhail
I've carried out an experiment on the solder paste normalisations upon withdrawal from refrigerator, by probing a few thermocouples onto the jar and syringe and let in normalise in room temperature for 6 hours ( using the temperature profiler ). The
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
Electronics Forum | Mon Dec 15 21:31:30 EST 2003 | Dean
Ahmen Brother! I had the unfortunate pleasure of supporting sister factories in Guadalajara and Jauarez. It is a totally different environment. I had a friend at MPM that has a great story about this shop in Mexico that kept buying the Monitor Inte
Electronics Forum | Wed Jan 14 06:42:38 EST 2004 | tommy
We see spattered(spitting of flux or solder to nearby area) solder/flux on gold fingers.We view the gold fingers area under 30x before reflow and it is cleaned but after reflow we see flux droplets or solder on gold fingers. We tried to changed a new
Electronics Forum | Mon Mar 08 12:08:16 EST 2004 | Robert
In the printing process... Do any of you change your print profile regularly? Let's say you just opened a fresh jar of paste and you're on your 50th print. Do you slow the squeegee speed or change anything on your existing profile? I just add more pa
Electronics Forum | Sat Jul 16 16:21:56 EDT 2005 | Mark
Should solder paste be placed back in the refrigirator after use? If so, is there a limit on how many times we may take it out and re-refrigirate it? After receiving solder paste, it is put away in the fridge. Then, removed a few hours before use
Electronics Forum | Thu Feb 28 14:04:39 EST 2008 | tonyamenson
What happens as solder paste is used when it becomes un-usable? Does it dry out due to flux evaporation or does it absorb to much moisture from the air which changes its composition too much? Now for the big question. I had an operator add flux to t
Electronics Forum | Wed Mar 05 16:29:56 EST 2008 | raincity1
You are playing with fire; you evaluate and specify paste for your products/SMT line, when you start adding tacky flux or whatever to your paste you don't really know what you are then dealing with - it osn't what you evaluated. We use solder paste f
Electronics Forum | Tue Sep 22 10:29:18 EDT 2009 | stepheniii
To how many decimal places? Do you want to have a factor for different screen printer operators? There is no such formula and I doubt there ever will be one with any real accuracy. The stencil house might be able to tell you the total area of the
