Electronics Forum | Fri Jun 01 01:07:13 EDT 2001 | Brian Sloth Bentzen
I would be very interested in informations on OSP (organic solderability protection) on PCB�s. Good or bad experience with solderability, storage etc. There must be different types / brands of OSP. What type should be prefered ? And if possible
Electronics Forum | Wed Oct 06 04:11:35 EDT 2010 | grahamcooper22
I've done minimal research to this point and > understand my issue with solder on the double > sided boards is due to oxidation that occures on > the unpopulated pads when the board makes its > first trip through the reflow oven. > > We did run
Electronics Forum | Wed Oct 13 15:09:55 EDT 2021 | dingerusaf
What is the proper storage and shelf life after washing a PCB with an OSP finish? We sometimes have to pull the boards off the line and wash the solder paste off the boards.
Electronics Forum | Fri Apr 18 18:06:47 EDT 2014 | davef
Methods that can reduce the wettability of OSP: * Previous heat cycles * Previous cleaning cycles * IPC-1601 "Printed Board Handling and Storage Guidelines" says do not bake prior to soldering * Using improper handling methods BR ... davef
Electronics Forum | Mon Feb 09 10:51:10 EST 2015 | jax
If solderability is the only concern, then there is no standard time. Multiple factors involving OSP thickness, Flux activation levels, profile parameters, storage environment will drive the problem. You just need to perform tests to determine your m
Electronics Forum | Fri Jun 27 19:10:44 EDT 2003 | russ
Tina, I agree with Dave 100%, I also work at a contract house and the first thing we do is tell our customers our concerns with OSP. Usually what happens is we build the first lot with OSP since they are usually built already and all subsequent lots
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 | Tue Jan 03 12:37:08 EST 2023 | stephendo
If you haven't opened the boards yet, don't. OSP is the least expensive finish and as flat as any. BUT there is a reason most places don't use it. It does not store at all well. If you want any flexibility regarding storage of pcbs then go with ENIG.
Electronics Forum | Sat Sep 08 08:55:24 EDT 2007 | davef
We expect to see a copper shadow along the edge of pads when soldering boards with organic solderability protection [OSP]. IPC-A-610 has defined this as acceptable for years. During early reflow stages, the flux in paste dissolves the OSP where ther
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
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