Electronics Forum | Mon Jun 03 06:40:54 EDT 2002 | ianchan
Fair greetings, just a thought on flash gold plating... stubborn brat am I?! thou shalt need to know whether the selective gold plating is for solderability enhancement purpose? or any other undisclosed purpose? at least thy hast not received any i
Electronics Forum | Mon Sep 24 22:56:52 EDT 2018 | sarason
IF you are wanting to do to this you are to late in the process. The gold is usually applied after the copper etching of the multilayer sandwich. The edge is extended beyong the board edge and the all pins are connected together with a bussbar. The b
Electronics Forum | Wed Aug 22 17:00:51 EDT 2001 | Doug Chambers
I am researching articles with respect to intermetalics growth associated with gold as a final metalization. We are currently looking at a few options that include a 10uin flash followed by a 30uin selective and a total 30uin finish. The concern is
Electronics Forum | Mon Aug 10 11:28:19 EDT 1998 | Justin Medernach
| Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, not ele
Electronics Forum | Wed Dec 22 01:39:06 EST 2010 | boardhouse
Hi Johan, As a Asian board supplier - I would not recommend using Lead free hasl on any product that has BGA, you would be just looking for issues, flatness being the main. I agree with one of the other replies - Your purchasing dept. should not be
Electronics Forum | Wed Jan 14 08:28:46 EST 2004 | davef
Search the fine SMTnet Archives for background on solder on gold fingers. As we recall: * Paste selection * Proper reflow recipe tuning ... are important.
Electronics Forum | Mon Oct 02 13:04:54 EDT 2023 | proceng1
I did a post a while back about this with Selective. I don't recall all the details now, but you can search it.
Electronics Forum | Mon Aug 21 20:17:08 EDT 2000 | Dave F
Hey Gyver: Oooow, using a pencil eraser has to take time. I would hate to be the person responding to your customer trying to explain the pencil eraser shreds accidentally left on the board. Awww, just spritz it with DI water and wipe it off with
Electronics Forum | Fri Jun 19 10:03:46 EDT 1998 | Earl Moon
| Has anyone had experience with placing BGA on gold plated boards. I thought I read a while ago there was a problem with embrittlment causing cracked joints. If anyone has experience with this your feedback would be great. | Mike Mike, We and ind
Electronics Forum | Thu May 07 20:28:35 EDT 2009 | davef
From our notes, the following is a series of snips from: "Copper Dissolution in Tin" LJ Turbini, PhD, adjunct faculty member, University of Toronto, Materials Science and Engineering, SMT 2/07 As the solder becomes molten, copper from the board diff
