Electronics Forum | Thu Aug 12 14:59:50 EDT 2004 | davef
Russ: Immersion gold [imm Au] is "soft" and it's "gold", but it is NOT "soft gold". Here's the question for your board house: If imm Au is "soft gold" and imm Au self-limits
Electronics Forum | Thu Jan 24 20:00:24 EST 2002 | davef
If solder touches gold, you should see solder, rather than gold. Since you see gold, something is wrong. * Is the solder touching the gold? If not, why not? * If the solder is touching the gold, but the gold is not soldering, there is a problem w
Electronics Forum | Wed Aug 11 16:09:50 EDT 2004 | Kris
Hi How does one distinquish between hard gold and immersion gold ? thickness is 4 to 10 u" for Au and 300 to 400 u" for nickel what happens if the gold drops below 3" and the nickel is above 350" what are the typical failure modes associated with
Electronics Forum | Fri Mar 24 18:07:25 EST 2006 | Chris
Flash gold is just thin gold plating over electroless nickel or electrolytic nickel. Flash gold is electrolytic gold where the panel is connected to a plating rectifier and current causes the plating process to occur. Gold thickness is controlled b
Electronics Forum | Fri Jun 09 12:51:52 EDT 2006 | flipit
You can not solder to 30 micro inches of gold over nickel and certainly not 80 microns. You can not with tin lead solder or SAC305 anyway. The upper limit is between 6 and 10 micro inches of gold. This is what ENIG plates to. If you solder to gre
Electronics Forum | Wed Jun 29 16:25:51 EDT 2005 | mattkehoe
When discussing this with the customer he said that his vendor recommended a hard gold plating finish on the board due to the BGA. I said "hard gold"??? And he said yes, hard gold. Turns out the boards were plated with hard gold, not ENIG. Thank
Electronics Forum | Thu Dec 08 08:18:29 EST 2005 | grantp
Hi, We have recently moved to flash gold as well, as we had solderability issues with emerson gold, and this was supposed to be a solution. However I did not know flash gold would be thicker, and could have other issues. Is flash gold a stable boar
Electronics Forum | Thu Jan 09 12:14:11 EST 2014 | hegemon
Not an expert on Gold Plating, but I would think that if you are making mechanical contact with the gold, that hard gold plating would be better. Immersion plating in this industry is typical for protection of solderable surfaces, and is pretty thin,
Electronics Forum | Mon Jul 31 14:51:31 EDT 2006 | bhu
Can anyone suggest a supplier for gold solution when replating gold fingers that had solder on them?
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.
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