Electronics Forum | Thu Jan 12 02:08:47 EST 2006 | adeline_ko
Hi, What is the different between Electroless Nickel / Immersion Gold (ENIG) and Immersion Au. Are they refer to the same finishing? We has been using the Gold thickness (0.00005 - 0.00013mm) , nicket (0.0025mm) for all Gold finishing brd (Immersio
Electronics Forum | Fri Mar 13 17:09:49 EDT 2009 | kmorris
We have found very small solder deposits on the gold fingers of some PCI boards after assembly at our CM. In the IPC-A-610, it says that no contamination or solder is allowed in the critical contact area. 1. I'm looking for feedback on what others
Electronics Forum | Sun Nov 06 09:02:31 EST 2005 | davef
IPC-A-600 - Acceptability of Printed Boards
Electronics Forum | Fri May 13 14:08:39 EDT 2011 | eezday
This appears to be black-pad and is often the result of using specs that call for gold plating that is too thick. The black pad is corrosion that is created between the gold and electroless nickel during the gold plating process. This is counter in
Electronics Forum | Tue Jun 04 17:10:13 EDT 2002 | davef
First, �flash gold� is very loose language. It means different things to different people. �Flash� gold is a thin coat of immersion gold. Imm gold self-limits at ~0.3um[12uin]. And fabs put-down �flash� prior to electroplating thicker gold for wi
Electronics Forum | Tue Nov 23 08:38:52 EST 2004 | Roxy Kendall
Does the conductor spacing requirement in IPC-600G apply to pads? Does it include the nickel/gold finish or only the underlying copper?
Electronics Forum | Tue Jan 10 12:53:16 EST 2006 | muse95
There is a tape test from IPC in their TM-650 spec that can be downloaded for free from the ipc website. It will test for gold adhesion to the underlying nickel. Section 2.4.1E, I believe. It is quite simple to perform.
Electronics Forum | Fri Jul 11 07:04:26 EDT 2008 | davef
2 uinch, right? Here is the revision level for IPC documents: http://www.ipc.org/4.0_knowledge/4.1_Standards/revstat1.htm
Electronics Forum | Sat Nov 14 08:05:54 EST 1998 | Earl Moon
| | | | I believe that gold fingers on my circuit boards are being | | | | contaminated and need to clean them with some chemical | | | | solution. Any recommendations. | | | | | | | Chuck: What is the type and source of your contamination? Dave
Electronics Forum | Fri Nov 13 23:33:33 EST 1998 | Kallol Chakraborty
| | | I believe that gold fingers on my circuit boards are being | | | contaminated and need to clean them with some chemical | | | solution. Any recommendations. | | | | | Chuck: What is the type and source of your contamination? Dave F | | We a
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