Electronics Forum | Mon Jul 22 15:02:31 EDT 2013 | dyoungquist
What is the pad surface finish on these boards? I know OSP and silver finishes have a shorter shelf life than HASL or gold. We do not use OSP or silver on our boards so I don't know what to look for visually on the pads when they have exceeded the
Electronics Forum | Thu Apr 14 06:00:01 EDT 2005 | bryan
The shelf life of immersion silver is 6 to 12 months in good storage conditions. The finish is usually coated with a protective layer that inhibits oxidation (like with copper OSP). Care must be taken when handling the boards as the protective la
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 | Sun Mar 23 13:39:39 EST 2003 | MA/NY DDave
Hi, From re reading, I think I did OK with my previous message yet I wanted to hit some other items, maybe differently. Without checking all the sources I don't believe there are any industry wide standards. I am sure and know there are industry
Electronics Forum | Thu Sep 27 16:40:12 EDT 2012 | davef
Ideally, shelf life should be twelve months from application, but not all OSP's are the same so check manufacturer's instructions
Electronics Forum | Thu Sep 27 09:53:46 EDT 2012 | testbloke
Anyone ?
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 | Fri Jan 15 14:45:48 EST 1999 | Earl Moon
| | | Folk's, | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do
Electronics Forum | Mon Jan 18 10:01:16 EST 1999 | John W
| | | | Folk's, | | | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how l
Electronics Forum | Tue Jan 19 11:12:41 EST 1999 | Dave F
| | | | | Folk's, | | | | | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly
