Electronics Forum | Mon Jan 05 00:30:07 EST 2004 | Arthur Yang
Hi you there, Do you have any experience upon the shelf life of PCBA which passed 100 cycles of liquid to liquid thermal stress test, 125 to -35 centigrade for 15 minutes and 5 seconds of transfer time from 125 to -35 centigarde. Will apprecia
Electronics Forum | Mon Jan 05 18:03:04 EST 2004 | davef
You may struggle finding the information that you seek, because there is so much variability in the design and fabrication of boards. * What is the purpose of such a test? * What product type sees such an use environment? Consider using the guidelin
Electronics Forum | Sun Sep 01 05:39:36 EDT 2013 | leardkattiya
Hi, can someone give definition on pot life? does the pot life start once it's been taken out from fridge or the pot life starts once recommended thawing ends?
Electronics Forum | Thu Sep 05 22:33:28 EDT 2013 | davef
It depends: * If you're talking jars, I'd be as conservative as possible. So, 3 days from when the jar is removed from the frig would be my pot life limit. * If you're talking Semco cartridges, I'd be talking about 10 days from when the cartridge is
Electronics Forum | Thu Apr 12 20:27:10 EDT 2001 | davef
Tantalum caps degrade over time. You should not be seeing "chipped-off & cracks" regardless of the age. This should not be a shelf-life issue, unless you are storing them in an aquarium. Tell us the story. Solderability is a shelf-life issue and
Electronics Forum | Tue Apr 10 23:33:50 EDT 2001 | zam_bri
Hi.. What is the typical shelf life for chips capacitor 0603/0402 and what is the consequences of using the capacitor which more than 1 year old esplly on double reflow process. Pls help and thank you in advance. cheers
Electronics Forum | Thu Dec 16 23:17:02 EST 2010 | Jacki
Hi Kim Dun take any risk in delamination bcoz u will be the person to answer for being it. So, we do bake all Pcbs, which have 3months of shelf life, b4 startin any process although they are still inside the factory packs.
Electronics Forum | Fri Sep 09 05:29:25 EDT 2016 | jasltd
simpel answer is yes it will need to be baked, the typical shelf life for a sealed component assuming it has been sealed would be a max of 2 years but some are shorter. The bugger problem with the device may well be solderability of the device!
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
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