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 | 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 | 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 | Mon Oct 06 12:37:18 EDT 2003 | ramanandkini
It was a nice discussion. What I did here was a thermal shock test 1 hour@ +90 deg.c and immediately 1 hour @ -40 deg.c. The second test I did was a high humudity test for a week. After each test, I carried out a peel test with scotch tape. Those bo
Electronics Forum | Tue Sep 16 10:58:03 EDT 2003 | swagner
I am currently having a discussion with a pcb supplier about inadequate hasl thickness, we are measuring below 40 microinches of hasl when our spec calls for 100 microinches as the minimum. Our supplier came back with the statement the entire indust
Electronics Forum | Thu Oct 07 20:34:48 EDT 1999 | Tony Huang
Hi, Does anybody know what is the minimum gold plating thickness on the PCB goldfinger required by the industrial specifications - IPC, Bellcore, etc. Where can I find the information? Appreciate for the help! Thanks, Tony
Electronics Forum | Tue Aug 17 13:24:47 EDT 2004 | blnorman
We have parts that have electroplated tin over nickel. The mfg. assures us the minimum thickness of the tin is 5 microns. Cross sections have shown many instances of 1 micron and pits that go down to the nickel barrier layer. A request for thicker
Electronics Forum | Fri Oct 08 17:12:31 EDT 1999 | Dave F
| Hi, | | Does anybody know what is the minimum gold plating thickness on the PCB goldfinger required by the industrial specifications - IPC, Bellcore, etc. Where can I find the information? Appreciate for the help! | | Thanks, | Tony | Hi Tony:
Electronics Forum | Tue Aug 17 17:06:43 EDT 2004 | davef
First, we'd like to see your supplier's minimum Sn thickness to be increased to 10um. Look here for support of this position: http://www.psma.com/HTML/FILES/forums/leadfree/hp_ext_pos_sn_for_pbfree.pdf Second, increasing the thickness of tin: * Ra
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