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 | 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 | 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
Electronics Forum | Wed Aug 12 13:11:37 EDT 1998 | Tyler Posey
| Can someone point me to where I can get a copy of the spec for these | finishes. | Thanks | Richard Jackson | richardj@tanisys.com | Jackson_Richard@csi.com Richard We have also been looking into OSP's. Enthone-OMI is a source for anything you ne
Electronics Forum | Thu Mar 30 08:48:37 EST 2006 | russ
So you have solder balls at the outer edge of the part right where the pad goes underneath? If so you just have too much solder but I wouldn't worry about them. the solder usually does not wet to the edges of these parts because of the exposed copp
Electronics Forum | Tue Jul 03 02:43:20 EDT 2012 | grillomalta
We clean a good number of fiducials, mostly where HASL PCBs are used. Since the pad is not exactly flat, our SONY 1500 MKII reflects the light from what is essentially, a small 'mound'... Many times our operators use an eraser to 'dull' the finish.
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 Dec 10 05:03:58 EST 2002 | praveen
We are having solder fillet finish issue. The solder looks like rough solder on the connector leads .The plating of the leads is Nickel (99.9% purity) and the PCB plating is imersion gold. I have tried fine tuning my reflow profiles an have used N2 i
Electronics Forum | Thu Oct 25 13:33:18 EDT 2012 | cyber_wolf
Ken, The photo looks like results I have seen because the gold flash was too thick on the board. This causes a condition known as gold imbrittlement. You may want to get an analysis of the plating thickness. I'm not real experienced with immersion si
Electronics Forum | Thu Dec 08 01:05:34 EST 2005 | Mike_Kennedy
Our new PCB supplier can give us a 20% price reduction if we convert from an ENIG finish to a FLASH gold finish. My uderstanding between the two is as follows: ENIG - Nickel is plated over copper and then immersed in Gold which forms a self limited f
