Electronics Forum | Mon Oct 31 09:35:59 EST 2005 | Slaine
Hi as this has a gold flash the nickle should be active an not require strong fluxes, i would suggest either your not getting enough heat into it (unlikely if your seeing dewetting). or that you have a plating problem the nickle has oxidised before
Electronics Forum | Mon Feb 27 09:31:30 EST 2012 | pauld
Hi Dave, Picture a camera mounted on top of a fixed base that pans 360 deg. back and forth. The motor connects through a circular slip ring board with brush connection. The rings are hard gold and the typical brush material is soft. Unlike the armatu
Electronics Forum | Fri Nov 12 16:59:58 EST 1999 | John Thorup
Hi Michael While driving home last night I realized the omission in my response. I thought someone would call me on it. I should have clarified that the dissolution of the gold into the joint would be affected by the thickness of the gold plating,
Electronics Forum | Wed Jul 26 10:57:16 EDT 2000 | Steve Schrader
Doug, We've suffered through similar frustrations. One thing we found that might be of some help is uur supplier, unbeknownst to us, was outsourcing their immersion gold. Their supplier apparently lost control of their process for a period of a fe
Electronics Forum | Tue Jun 29 16:09:44 EDT 1999 | Dave F
| Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | Roberto: Leaching, according to the SMTnet Library of Terms: Leaching. Dissolution of a metal coating into liquid solder. Nickel barrier unde
Electronics Forum | Thu Aug 26 10:03:17 EDT 1999 | Sal
| | Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | | | Roberto: Leaching, according to the SMTnet Library of Terms: | | Leaching. Dissolution of a metal coating into liquid solder. Nickel ba
Electronics Forum | Wed Jul 09 11:58:03 EDT 2003 | sam
When we try another test by using less solder paste, we found under the microscope that the solder was actually stick on the LED gold surface, but not having good wetting. By this finding, we can basically conclude that it was poor solderability caus
Electronics Forum | Mon Oct 20 15:41:19 EDT 2008 | patrickbruneel
Josh, You can not check the bare boards for black pad unless you remove the gold plating. Like Robin said black pad is nickel oxidation/corrosion and a result from bad electroless nickel plating bath control. The only preventative action you take is
Electronics Forum | Tue Aug 30 22:38:54 EDT 2005 | cabs
Does any one knows where to get a plating thickness meter that can be use in the fine pitch contacts and trace in PCB application like BGA pads? If there's a hand held device at lower cost much better... Also if you can recommend companies that offer
Electronics Forum | Fri Mar 24 15:44:11 EST 2006 | Hoss
I have no experience with soldering to a flash gold finish. We have specified ENIG for a prototype PCB order and the supplier is asking us if they can use flash gold. They are telling us that the two are interchangable which I don't believe. The
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