Electronics Forum | Tue Aug 15 15:26:56 EDT 2006 | Ben Jong
HI, I had a question for very generalise questionires from my Kitting dept with very usual enquiries prompting me that : For the after open seal solder paste tube later kept inside storage, how long that half way use solder paste can be still conside
Electronics Forum | Tue Jul 02 14:24:30 EDT 2002 | paul_bmc
My question is refering to "stencil life". How accurate is this and is this something I can go by. The solder paste I am using is Kester R562, R562 specifications state that it has a 12 hour stencil life, optimal temp ranges 70-77 F, 35-65% RH. Ou
Electronics Forum | Mon Jul 26 20:57:55 EDT 2010 | davef
It depends. Read "Evaluating Solder Paste - not an Option" by Phil Zarrow, ITM Consulting
Electronics Forum | Mon Dec 17 09:38:27 EST 2012 | cyber_wolf
Why scrap paste if there is no degradation of performance? Do your own study to determine this.
Electronics Forum | Sat Dec 15 06:34:54 EST 2012 | sowmya
Normally paste manufacturer specifies stencil life of a paste is 10 hours. the question is, if i run a continuous manufacturing for 40 hours, we will be adding 250 g of paste for every two hours. The addition of 250 g will be mixed with the paste whi
Electronics Forum | Mon Dec 17 08:34:58 EST 2012 | emeto
I would scrap it. As you said part of it is going to be old paste. All manufacturers don't recommend mixing old with new paste because you change the rheology of the paste.
Electronics Forum | Thu Nov 03 08:34:25 EST 2005 | Slaine
Hi We currently use a small amount of Alloy : 43Sn 43Pb 14Bi Flux: RMA-51AC, Metal : 88.5%. We use it for reworking a product and only consume about 100g per year, we are in the middle or ordering in some more paste but the MOQ is 500g. Is it possibl
Electronics Forum | Thu Nov 03 09:20:29 EST 2005 | russ
Unforunately, the only one who can give you that answer is the manufacturer. They are the only ones who know what is in their paste and how it reacts to different situations and conditions.
Electronics Forum | Mon Jul 26 20:31:59 EDT 2010 | engr
When hand placing SMT components what is the working time before the solder paste become unusable (dry)?
Electronics Forum | Tue Jul 02 16:04:08 EDT 2002 | russ
We normally disregard what the "tech" sheets say. A lot of it has to do with your printer settings, prints per hour, placement time, stencil cleaning procedures etc... Just another wrench to throw in, We have noticed lot to lot paste differences al
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