Electronics Forum | Thu Dec 16 04:14:16 EST 2010 | kemasta
Hi, I am new in this industrial. I learnt that PCB may absorb moisture and eventually caused delaminate after heat apply on it (reflow or wave). But I don't quite understand, if the PCB was keep in sealed bubble bag, and with the humidity control wit
Electronics Forum | Mon Jan 08 17:32:47 EST 2007 | Board House
Hi Oswald, Shelf life with ENIG if vacuum sealed and kept in controled enviroment would be 12 to 14 months. Shelf life in shrink wrap - No recomended packaging, 6 moths. If Shelf life goes over the 12 -14 months - Baking ? I would not suggest re-b
Electronics Forum | Wed Sep 26 10:05:41 EDT 2012 | testbloke
Although we do not have any soldering issues with our OSP PCB's, I am trying to establish clear rules with regards pcb storage and shelf life. Our PCB's are supplied in metalised moisture barrier bags but without desicant, our current rules as follow
Electronics Forum | Thu Nov 30 00:41:23 EST 2017 | abhilash4788
Dear All, I have OSP finsh pcb on my production, the pcb thickness is 1.5mm and the product is one sideded pcba. After reflow process, Is there any specific time frame defined for smt completed OSP finish pcba before going for wave soldering proce
Electronics Forum | Wed Dec 06 09:09:54 EST 2017 | davef
Suppliers have improved the utility and quality of OSP [organic solderability preservative] solderable surface protection over the years. Be cautious reading too much into older SMTnet [and web in general] conversations about handling OSP. When prop
Electronics Forum | Thu Aug 23 16:10:29 EDT 2001 | slthomas
Standard ESD bags aren't a vapor barrier, though, are they? Maybe you can get them spec'd that way, I dunno. You might have to get poly/foil bags and heat seal 'em. Fill 'em with nitrogen first, then suck most of it back out just for insurance. Don
Electronics Forum | Fri Aug 03 14:44:36 EDT 2007 | rpadilla
Depends on the manufacturer of the paste... Rosin-based-flux solder paste usually takes 12-24hr's to fully oxidize with open containers. Water-based flux usually is 3-12hr's, but some have a 24hr open container shelf life... However, uncertain unt
Electronics Forum | Tue Sep 11 22:52:18 EDT 2007 | davef
Here are some options for removing OSP coatings from pads of the BGA substrates. * Leave the substrates in storage for 13-14 months. Shelf life of OSP coating is ~12 months, depending on the product. * Wash the substrates in your aqueous washer. Ea
Electronics Forum | Wed Jul 04 12:35:19 EDT 2001 | davef
I thought I responded this this a while ago, guess NOT!!! Wow, Dano yagot Entek boards that are that old!!!! Coo. Sounds kwazy that you�d end-up with that volume of old boards, but it�s probably one of those deals where correcting the problem keep
Electronics Forum | Mon Sep 28 10:44:10 EDT 1998 | Chrys
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