Electronics Forum | Wed Dec 28 16:03:53 EST 2005 | Chris
I have lots of experience with thermosonic gold ball bonding. You can read the literature and you will probably find some papers that say you can do it. I have never been able to do it. We gold ball bond all day long with little problems at all bu
Electronics Forum | Wed Aug 19 03:24:49 EDT 2015 | pcbman
I ordered few times of prototyping gold plating > pcb from China. How to i differentiate they are > ENIG or Flash gold? Hi,Friend , this is very easy to distinguish the ENIG and gold plating pcb, you can stratch the solder mask off and see the co
Electronics Forum | Tue Aug 04 05:44:28 EDT 2015 | hyng
I ordered few times of prototyping gold plating pcb from China. How to i differentiate they are ENIG or Flash gold?
Electronics Forum | Wed Jan 13 04:46:21 EST 2016 | crystalpcb
Hi Hyng, You can distinguish their color: ENIG with golden color and gold plating is a little bit dark than ENIG.
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 | 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 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
Electronics Forum | Thu Dec 08 22:26:45 EST 2005 | Mike_Kennedy
Dave, Excellent information thank you. What I cant seem to establish is how other manufacturers have found the FLASH gold in terms of reliability especially considering that the flash process is more difficult to control.
Electronics Forum | Fri Dec 09 02:20:47 EST 2005 | Mike_Kennedy
Grant, I dont quite understand the implications my self yet on gold deposit using FLASH or ENIG. However the important part of the gold finish is that it is kept under 3% of the total solder joint, so normally its safe. With the FLASH process it is m
Electronics Forum | Mon Nov 27 08:10:08 EST 2006 | Loco
Dear all, I'm having a friendly discussion with our chief manufacturing engineer. To our PCB suppliers we specify the use of "chemical gold", imo this means we use ENIG, Our boards are all copper under the solderresist which imo further confirms we
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