Electronics Forum | Wed Jun 10 17:18:47 EDT 1998 | Igmar Grewar
| Okay, here's a stupid question. What exactly is HASL and OSP? We are going to delve into this technology where I work and I want to utilize the wealth of knowledge here to make life easier. Specifically, what are the differences, the advantages, di
Electronics Forum | Sun May 02 16:57:09 EDT 2004 | davef
You're correct. We prefer to probe solder, rather than copper, because the solder absorbs the impact of the probe better than copper and so, helps preserve the life of the probe. Beyond that, OSP has a limited "shelf life". If the OSP is not coate
Electronics Forum | Thu Jun 14 13:41:06 EDT 2001 | bentzen
Thanks a lot Dave. I think I will stay away from OSP. I just thought that it could be a cheaper solution than NiAU for fine pitch. And I don�t trust the silver coating types. Brian
Electronics Forum | Wed Feb 14 15:54:18 EST 2018 | cbart
do you see signs of contamination or oxidation? if not why not just send them to the board house and have another OSP coating layer applied?
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 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 | Tue Apr 22 14:53:22 EDT 2003 | Robert
OK...I'm hooked on this subject. Were changing from NiAu to OSP as a "savings" and not because we choose too. So far we have had great success with BGA and are working on TSOP, SOP, etc. The only thing we have come to dislike so far is the ring aroun
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 | Thu Sep 06 22:01:21 EDT 2007 | syedsmt
Hi! I am Syed from Hitachi located in Malaysia.It seems that the discussion about OSP is very much related to the dillema that I am facing in my company.I am the Senior Executive for the SMT Department at Hitachi.Currently we are facing some issues w
Electronics Forum | Thu Oct 26 17:48:12 EDT 2000 | ptvianc
Hi: Generlly speaking, in a reactive mode, nitrogen blankets are used to improve the yield of a process that is marginal in terms of removing, and/or preventing the re-appearence of, oxides on copper features or component I/Os. That marginality can
