Electronics Forum | Thu May 09 15:56:33 EDT 2002 | stownsend
We are using NC. Paste doesn't seem to have an effect on the solderability on a bad batch of ENIG. When ENIG has gone bad, throw the board out.
Electronics Forum | Thu May 09 17:14:45 EDT 2002 | davef
We are changing our ENIG boards to imm silver. Look here http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=5114&mc=5
Electronics Forum | Fri May 10 17:45:08 EDT 2002 | davef
Kinda makes ya wonder why ya changed, eh? Some of our 20 pitch HASL boards come-out just as flat as a farm pond. Just got ta letum be. Pete is spot on!!
Electronics Forum | Fri May 10 13:52:46 EDT 2002 | pjc
FYI: not all OSP are created equal. I have had expierence, both good and bad w/ OSP boards. To qualify the vendor I would take a bare board and run it thru my oven twice on a reflow profile then flux it with NC flux and run it thru the wave solder fo
Electronics Forum | Sun May 05 22:18:20 EDT 2002 | ianchan
Hi mate, we had a crap experience (once...no more...) with gold plated over nickle (Au/Ni) PCB that had nickle contaminents in the PCB supplier's gold bath. the Ni caused batch-delivery of the PCB to us for mass production, to exhibit the visible s
Electronics Forum | Fri May 10 10:36:09 EDT 2002 | stownsend
Could be. Bottom line is my frustration is high with ENIG. It has it's merits, but if it's not done right, it'll bite you in the butt. Too many other choices to keep this frustration around. I have never used OSP. I'm requesting 200 boards from my b
Electronics Forum | Fri May 10 01:41:04 EDT 2002 | ianchan
Steve, Hi mate, was doing some text book reading and saw this one paragraph that commented on the PCB fab plating could have residue chemistry inherent in the PCB if the fab process control isn't up to mark. such chemistry could surface to the Au/N
Electronics Forum | Thu May 30 08:04:25 EDT 2002 | zanolli
Hello Russ, I'm not quite sure I understand your question. Are you saying that you must hand solder these connectors because the gold plating doesn't allow other though hole processing methods to wet the solder the length of the pin in the PTH? Reg
Electronics Forum | Wed May 29 19:17:17 EDT 2002 | russ
We are starting to see a large increase in the use of through board gold plated connectors that require hand soldering with the limitation of .o6" encroachment up the pin. What is the best way to accomplish this? we currently scrap about 5-10% of t
Electronics Forum | Thu Aug 12 14:50:12 EDT 2004 | russ
This is interesting, I was once told by a PCB supplier that "soft gold" was immersion and the "hard gold" was the plated. But I agree with Dave F., Chris, what's going on? Russ
