Electronics Forum | Fri Jan 14 07:55:07 EST 2000 | Pat Pepper
Hi Wolfgang, Thanks for the response. We had a similar situation to yours with some white tin samples that sat around for about eight months. Samples soldered right after they arrived soldered better than the ones we soldered eight months down the
Electronics Forum | Thu Oct 14 18:02:31 EDT 1999 | JohnW
Bryan, 0402's tombstonning isn't that uncommon and usually the 1st reaction is alway's the pad size aint right. If you've followed the IPC guidline's normally you should be fine but I'd double check the component supplier's spec's as well. brian's p
Electronics Forum | Mon Nov 25 16:12:52 EST 2002 | russ
there is a good article by AIM solder regarding tin. In a nut shell, if you do not apply flux or heat to tin finish you will never degrade it! I agree with the others that you need to check the thickness of the pure tin layer. We have forbidden ti
Electronics Forum | Thu Apr 16 14:09:04 EDT 1998 | Lou Madge
Dear Collegue, A seminar tittled "Things that you should know before selecting an alternative surface finish" will be offered on Friday, April 24 (during the week of the Nepcon East show) in Philadelphia. Topic that will be discussed include: Evalua
Electronics Forum | Thu Apr 16 14:07:49 EDT 1998 | Lou Madge
Dear Collegue, A seminar tittled "Things that you should know before selecting an alternative surface finish" will be offered on Friday, April 24 (during the week of the Nepcon East show) in Philadelphia. Topic that will be discussed include: Evalua
Electronics Forum | Thu Feb 24 00:37:08 EST 2022 | joshsvoboda
I have a pcb with an ENIG finish that is using a 144 pin LQFP and being soldered withSN100C/NC258 T4 paste. I used a oven profiler where the probes are taped down to the joint and the profiling software adjusts the program for the best profile for
Electronics Forum | Thu Feb 24 10:34:02 EST 2005 | Rob
Thanks Dave, From what I remember a lot of components went away from Silver Palladium to "base metal" terminations because of the difficulties in continuation of supply & stability of price. (Something about being mined in Chechnia or the Congo?) W
Electronics Forum | Fri Mar 24 15:44:11 EST 2006 | Hoss
I have no experience with soldering to a flash gold finish. We have specified ENIG for a prototype PCB order and the supplier is asking us if they can use flash gold. They are telling us that the two are interchangable which I don't believe. The
Electronics Forum | Thu Jun 14 04:24:32 EDT 2012 | brettrenishaw
Yes pads are still gold after the wave soldering process even if you wave solder a pcb several times. I have tried soldering using an iron and the solder takes to the pad as you would expect. This happens on all boards of this type and all boards are
Electronics Forum | Fri Dec 09 02:20:47 EST 2005 | Mike_Kennedy
Grant, I dont quite understand the implications my self yet on gold deposit using FLASH or ENIG. However the important part of the gold finish is that it is kept under 3% of the total solder joint, so normally its safe. With the FLASH process it is m
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