Electronics Forum | Mon May 11 11:05:08 EDT 2009 | milas
Hi 1. Does anyone know what the pros and cons are of ENIG vs Electroplating ? 2. Is there a likelyhood that in either of these processes the gold can flake off after a period of time ? Thanks in advance Milas
Electronics Forum | Mon Mar 27 09:54:35 EST 2006 | russ
Flash gold is usually to thick and will cause embrittlement of your solder joints if concentration exceeds I beleive 6% in the joint
Electronics Forum | Thu Apr 20 13:42:23 EDT 2006 | fredericksr
I've seen embrittlement %s down to 3%, but a standard 5 mil solder pad would require well over 100uIn of plated gold to cause embrittlement. -Other Russ
Electronics Forum | Wed Jun 03 11:04:32 EDT 2009 | joeherz
Another thing to consider - If you're processing lead free, the nickel layer between the copper and gold provides extra protection against copper dissolution. This is a nice piece of insurance especially when performing rework. Cheers
Electronics Forum | Mon May 11 18:30:10 EDT 2009 | boardhouse
Hi Milas, Here is a link to an artical on the subject. http://pcdandf.com/cms/content/view/4784/95/ The big difference in the to is that ENIG is self limiting where as electroplating is not. All product manufactured with either finish goes throug
Electronics Forum | Fri Feb 17 09:08:22 EST 2017 | davef
An interesting paper on the topic is "The evolution of surface finishes in mobile phone applications" by Claus Würtz Nielsen at Nokia Mobile Phones R&D [http://www.cicmt.org/adv_micro/papers/Nordic2004paper.pdf] The paper reported corrosion problem
Electronics Forum | Tue Feb 21 03:20:57 EST 2017 | pcbcart
We're a custom PCB manufacturing services provider based in China and we have made many high quality circuit boards for high end products. Based on your project requirements and our years' experience, we are positive that ENIG is totally sufficient.
Electronics Forum | Fri Feb 17 07:23:29 EST 2017 | sevenfortyone
I'm a PCB designer working on a board that has a rubber keypad with control buttons mounted to it. The PCB contains the corresponding contact patterns for the buttons - a typical interlocking finger pattern. In the past when I've encountered this
Electronics Forum | Tue Feb 21 01:32:49 EST 2017 | soldertraining
Looking for advice on soldering lead free paste to a board with very heavy gold plating, In my opinion, Gold contact surfaces are often used on circuit boards with membrane switches which is a choice of technology for industrial, commercial and consu
Electronics Forum | Thu Aug 31 11:16:53 EDT 2017 | hxamalia
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