Electronics Forum | Fri Sep 21 10:35:37 EDT 2012 | davef
Flash gold is just thin electrolytic gold plating over electroless nickel or electrolytic nickel. Flash gold plating ... * Less than 3 microinch thick will be porous and take solder poorly * Greater than 10 microinch thick will cause brittle solder c
Electronics Forum | Mon Sep 24 10:07:46 EDT 2012 | eezday
The answer, as stated above, is 3 microinch's however, it is equaly important, if not more important, to understand that the only function of the gold is to protect the surfaces beneath it. Only enough gold to cover the nickel beneath it should be u
Electronics Forum | Thu Sep 20 14:20:46 EDT 2012 | blnorman
From what I was told, gold flash normally refers to 10 microinches of gold.
Electronics Forum | Thu Sep 20 10:05:35 EDT 2012 | guyramsey
What is the state of the art in electroplated gold flash a a surface finish; thickness and tolerance limits?
Electronics Forum | Wed Dec 28 16:03:53 EST 2005 | Chris
I have lots of experience with thermosonic gold ball bonding. You can read the literature and you will probably find some papers that say you can do it. I have never been able to do it. We gold ball bond all day long with little problems at all bu
Electronics Forum | Tue Jun 13 08:17:06 EDT 2006 | davef
The solder alloy does not change based on the flux. Your potential for embrittlement is the same [providing the metal of the solders are the same] with either solder. We would guess the OA flux is [and drag tinning are] removing corrosion from the
Electronics Forum | Mon Jun 12 07:42:56 EDT 2006 | brian.perry@suntroncorp.com
We are placing a gold plated device (LCC) to a NiAu PCB using a SnPb No-clean solder. We're noticing quite a bit of difficulty with reliable joints (intermittent connectivity) and if we have to rework a particular device, adjacent devices of this sa
Electronics Forum | Fri Dec 03 19:44:34 EST 1999 | Russ
Hello all, I am in the process of converting our facility to noclean processes. So far I am experiencing troubles with soldering to gold finishes. The finish is an H.P. type1. The solder joints appear dull and grainy. They seem to be very strong
Electronics Forum | Tue Aug 20 18:15:02 EDT 2002 | davef
Haaaaa!!!! Soldering to plastic!!!! An apt analogy!!! I like to compare it to soldering to dirt. Some thing. In fact, you are soldering on nickel, when soldering on many things. It�s just that the gold, er Pd, flash enables the wetting mechanism
Electronics Forum | Mon Dec 13 00:05:28 EST 1999 | Dennis O'Donnell
I can't figure out why everyone is plating everything with gold. According to the J Standard, gold plating should be removed before soldering to the surface. The gold, when left on the surface to be soldered will contaminate the solder joint and ca
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