Electronics Forum | Sun Apr 15 23:35:14 EDT 2007 | Sam
few more questions: Is there any standard saying that the dull surface is accepted if solder Au plated leads? Understand that more than 3% Au in the solder connection leads to unacceptable embrittlement of the connection. How about any standard relat
Electronics Forum | Mon Sep 09 15:38:02 EDT 2013 | arendonk
Hi, We are having issues aluminum wirebonding on ENEPIG plated PCB by a too low pull force and or having lifts (1% range). Could any body advice how to solve this problem? Is there a special wire bond grade required? How to best clean contaminant
Electronics Forum | Mon Apr 21 16:38:45 EDT 2014 | barryg
Hello all. We have been having some problems soldering to what we believe is a nickel plated spring steel battery terminal to a PCB. We have tried scrapping , then tinning, dipping and still have problems. Are there any special fluxes or pre-treats t
Electronics Forum | Wed Feb 03 23:40:26 EST 1999 | Chris G.
| Does anyone know if I will have problems soldering surface mount components to an all hard gold plated PC board. We want to use hard gold similar to gold used for edge fingers because our customer is concerned about wear and conductivity of connect
Electronics Forum | Mon Mar 30 07:41:06 EST 1998 | Earl Moon
| Hi, | We have encountered de-wetting issues with gold plated components( SMT LEDs ). | The problem comes and go and we yet to locate the root cause ( process, component or solder paste etc ). | The rest of the components on the boards are not havi
Electronics Forum | Thu Aug 21 12:31:54 EDT 2003 | adlsmt
I have some finished boards that I have concluded have "black pad" defect. Outside of the black crap on some of the solder joints, if the boards are electrically functional, are they reliable? Any opinions would be appreciated as I dont want to throw
Electronics Forum | Thu Aug 21 20:39:09 EDT 2003 | davef
You have one option: Take the boards to the fabricator that build the board and ask him for $20k.
Electronics Forum | Fri Aug 22 09:49:31 EDT 2003 | davef
Ask your supplier for a corrective active and failure analysis of the boards. In parallel, send the boards to a failure analysis laboratory to determine the material on your gold pads. Take your work to another supplier.
Electronics Forum | Mon Apr 12 08:53:12 EDT 2004 | russ
what kind of temps is the board seeing? I noticed zones at 220 and 215 respectively could you be running too cold in the oven? Russ
Electronics Forum | Mon Apr 25 21:52:58 EDT 2005 | KEN
I wonder if yor customer means wrong "flux"? Your not solderng to gold. Your soldering to Nickle. The gold is disolved and dispersed. Your joint strength comes from the SnNi intermetalic.
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