Electronics Forum | Mon Jul 26 06:32:58 EDT 2004 | cyber_wolf
Grant, The only thing that you really gain from refrigeration is a couple more months� shelf life. Refrigeration also seems to slow down flux separation. I am not sure how your paste consumption is, but we use ours up way before the expiration date
Electronics Forum | Thu Oct 27 08:38:04 EDT 2005 | jdengler
Simply leave the paste out at the end of the shift for the next days use. Keeping the paste refrigerated just prolongs the shelf life. Even if you are at the expiration date leaving the paste out for 36 hrs won't make any difference. Jerry
Electronics Forum | Mon Jul 26 19:40:17 EDT 2004 | Grant
Hi, That's a good idea. I might head down the the 7-Eleven, and try it! I did not realize there is not too much to be gained by using refrigeration. We don't keep much paste in stock and buy it as we need it, so perhaps we should just keep it out r
Electronics Forum | Tue Feb 28 13:46:28 EST 2006 | slthomas
Assuming you're using DOM and shelf life to determine what's good and what's not, you just have to know 1)the rate at which you use it up, 2) how much shelf life is left, and 3) the rate that it goes bad when not refrigerated. From that you can tel
Electronics Forum | Tue Jul 27 06:04:16 EDT 2004 | cyber_wolf
Grant, I know of a couple places that throw their paste out at the end of the day. I have worked in SMT for over 15 years and we have never thrown paste out unless it was contaminated, or dried out. We have never had a problem. If you ask me, I would
Electronics Forum | Thu Jul 22 07:52:37 EDT 2004 | Chris L.
Hi Grant, The purpose for allowing the solder paste to reach room temp before production is to reduce the amount of water absobtion from the air. (e.g. a cold glass of water "sweats" on a humid day)The purpose for mixing is to make the viscosity more
Electronics Forum | Thu Oct 02 16:22:46 EDT 2008 | davef
Not all paste formulators offer suggestions on handling the storage of opened paste jars, but some do. Here's a couple. Storing Opened Solder Paste Containers * Once a jar or cartridge has been opened it should not be re-refrigerated. If solder past
Electronics Forum | Thu Oct 02 15:09:32 EDT 2008 | ck_the_flip
Jani, I got it from a very vague spec. from a solder paste supplier who stated, "It is not advisable to refrigerate an already opened container." Sorry, but I don't have details why. My guess is, several temperature excursions, after the air-tigh
Electronics Forum | Wed Oct 01 19:23:52 EDT 2008 | paligora
It depends on the usage , if it is regular and steady, only order when needed , we only order 2 jars when the last one is taken out of the fridge.One jar would last us about 2-3 weeks and it stays on room temperature. Ofcourse , you need a realiable
Electronics Forum | Tue Sep 30 14:14:17 EDT 2008 | ck_the_flip
I've done it 3 different ways in my career (3 different places): 1.) Process Engineering was responsible for solder paste inventory (as well as all other process materials). That was a bad situation due to the blame factor. 2.) TOOL-CRIB control
