Electronics Forum | Fri Nov 08 14:51:37 EST 2002 | davef
You should take steps to prevent paste seperation, regardless of the container type.
Electronics Forum | Tue Aug 05 03:22:48 EDT 2003 | emeto
Hi, Does anyone knows what's the rate for used materials for making soloder pastes? I found some charts, but they are old. I'm interested is leadfree already the most used and should I change my paste?
Electronics Forum | Thu Nov 21 02:43:07 EST 2002 | jate
Hi, Jar's quality is easier to measure. If you want to know paste viscosity etc. it's easier if you use jar. I have bad experiences about cartridges. I used cartridges for a short time but I change it back to jar because flux separated too easily in
Electronics Forum | Mon Nov 07 06:16:59 EST 2005 | laxman
Hi, We have faced the solderability issue (Dewetting and solder balls)in all the Boards after reflow.When we found this issue we discarded the old paste and started using the new paste then for some hours the solderability found to be O.K. After so
Electronics Forum | Thu Nov 07 07:35:23 EST 2002 | cyber_wolf
If you are experiencing flux migration, try refrigerating your paste when not in use. This causes the flux viscosity to go up. I have seen flux seperate from the solder is when it is VERY old and out of date.Sometimes warmer ambient temperatures wi
Electronics Forum | Fri Nov 08 14:57:43 EST 2002 | slthomas
What I was told is that the stirring is intended to promote some shear thinning, not to redistribute the flux. The cartridges (and I'm assuming the syringes, too, if you're differentiating between the two) alledgedly introduce some shear thinning ju
Electronics Forum | Mon Nov 07 08:27:56 EST 2005 | chunks
It could be you are drying out your solder paste. Most flux formulations are alcohol based and after a few hours can dry out. This can can lead to dewetting and solder balling as well. Especially if you do not homeplate your R's and C's. A simple
Electronics Forum | Mon May 14 17:10:34 EDT 2001 | davef
It's pretty straight forward: Cartridges require a bigger inventory investment and a dispensor, but improve paste handling and mixing.
Electronics Forum | Tue Nov 05 20:14:40 EST 2002 | yngwie
What is the advantage an disadvantage of using the Syringe vs Jar, for Solder paste supply media. Anybody with an input will be much appreciated. TQ
Electronics Forum | Wed Nov 06 09:01:59 EST 2002 | russ
Syringes seem to keep the paste fresher longer since there is less exposure to air than a jar. It is also nice to be able to just squeeze the trigger on a gun instead of using a spatula in my opinion. Russ
