Electronics Forum | Mon May 14 13:33:36 EDT 2007 | jax
Solderability!!! The CM in question has probably seen too many solder problems with White Tin in the past. We have had the same issues. To save us from spending too much time and money(verifying pure Tin plating thickness, Chemical leaching from th
Electronics Forum | Sat Jul 28 08:37:52 EDT 2007 | davef
There is no good choice. Board Finishes: Industrial/Battelle Class 3 Environment [Reliability Knowledge Gaps: For use of Pb-free solders in High Reliability Applications, J Smetana, iNEMI Availability of SnPb-Compatible BGAs Workshop, March 1, 2007,
Electronics Forum | Thu Feb 01 03:02:50 EST 2018 | robl
Hi Rob, > > I did check with the board house, and > the confirmed that there was no Nickel plating, > but that the silver went straight onto the copper > in their immersion silver > process. > > Interestingly I've even tested an > unplated sam
Electronics Forum | Wed Aug 18 12:35:41 EDT 1999 | Earl Moon
| | WE ARE CURRENTLY HAVING PROBLEMS REFLOWING BOARDS WITH WHITE TIN PLATING. WE ARE NOT GETTING GOOD WETTING ON THE PADS. | | WE HAVE CHECKED THE REFLOW PROFILE AND TRIED DIFFERENT PASTE'S. | | WE THINK THERE MAY BE CONTAMINATION OR OXIDATION ON THE
Electronics Forum | Wed Dec 15 21:29:34 EST 2004 | davef
We�d say that it�s incorrect that ENIG solderability protection cannot be steam aged. It�s true the immersion tin and silver cannot be steam aged. We believe that most of the issues surrounding the poor performance of ENIG after steam aging is attr
Electronics Forum | Thu Apr 20 14:59:11 EDT 2017 | davef
It's difficult to tell anything from your picture. But playing the odds, I'd say it's not "gold corrosion." It is very difficult to corrode gold. Gold is a NOBLE metal. From Wikipedia, the free encyclopedia In chemistry, the noble metals are metals
Electronics Forum | Fri Jan 14 08:42:47 EST 2005 | Jim Zanolli
We are performing testing for lead free connector finishes. We want to run solderability tests on a series of lead free connector plating options in a series lead free PCB's. I need some advice on the most popular lead free PCB finishes. I am aware
Electronics Forum | Thu Feb 21 03:25:58 EST 2008 | jlawson
I have seen smt chip varistors with Pd/Ag teminations that had poor wetting in terms of good fillet in LF (sac305) soldering. We found that the solder tended to be attracted to the plating on the part and off the actual pad (silver Immersion). This c
Electronics Forum | Mon Aug 24 17:58:10 EDT 2015 | warwolf
We have had some test results come back after we were getting poor wetting in our joints, we requested an EDS on our joints from our PCB supplier. They have provided the results and said that it was their fault and will replace. What I want to know
Electronics Forum | Thu Jul 27 21:57:16 EDT 2000 | Dave F
Hi Doug: Responding to your questions: � If gold over nickel is self limiting ... You didn�t say whether you gold plating was electroless or immersion. Electroless is not is self limiting. It can plate up to 5 thou. Expect immersion plated gold to
