Full Site - : gold embrittlement (Page 3 of 11)

Re: Noclean soldering to gold

Electronics Forum | Mon Dec 13 10:12:45 EST 1999 | John Thorup

Hi Dennis The gold plating on a circuit board is present to protect the nickle plating from corrosion. The layer is so thin that as it goes into solution in the solder it constitutes only a small percentage of the total joint. It is commonly accept

Re: gold finish on pcbs

Electronics Forum | Fri Nov 10 17:44:48 EST 2000 | Dave F

In response to your questions: Is the embrittlement from excess gold in lead / tin solder connections bad? It can be vereeee bad. Does it affect all plating processes the same? Give us a break and read the SMTnet Archives, for instance: BGA prob

Re: Noclean soldering to gold

Electronics Forum | Mon Dec 06 03:54:57 EST 1999 | Chris May

Hi Russ, I have a similar situation. I have been told that this can be caused by the nickel, over which the gold is plated, can result in suspect joints, embrittlement etc. Some joints can even be weak and broken without much force on some of my boa

Poor reflow over gold plating

Electronics Forum | Tue Jun 28 18:20:49 EDT 2005 | russ

Matt, have you run a profile on this board? Just because it's .062" doesn't mean that any old .062" profile will work. We have .062" thick boards that almost nil for copper and other are utilizing 2 oz. layers internally. They require quite diffe

Re: Noclean soldering to gold

Electronics Forum | Tue Dec 07 08:11:04 EST 1999 | Wolfgang Busko

Hi Russ, there�s something I don�t understand about the measures you took. I guess that TAL means time above liquidous and shortening of that time can result in bad dissolution of the protective Au-layer. The necessary time for the Au to mix with you

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 14:52:53 EST 2002 | Chris

Hi, I have read many articles about theromsonically bonding to soft gold. Many of these articles state you can bond to 10uinches of gold. I have worked with both Hughes and Panasonic bonders at two different companies and I have never been able to

solder SnPb wire to gold plated IC

Electronics Forum | Sun Apr 15 23:35:14 EDT 2007 | Sam

few more questions: Is there any standard saying that the dull surface is accepted if solder Au plated leads? Understand that more than 3% Au in the solder connection leads to unacceptable embrittlement of the connection. How about any standard relat

Re: soldering to hard gold plated PCBs

Electronics Forum | Wed Feb 03 18:36:47 EST 1999 | Earl Moon

| Does anyone know if I will have problems soldering surface mount components to an all hard gold plated PC board. We want to use hard gold similar to gold used for edge fingers because our customer is concerned about wear and conductivity of connect

Re: Tinning gold plated leads ( DIP, etc)

Electronics Forum | Tue Mar 21 20:25:30 EST 2000 | Dave F

John: What�s the matter? Free gold � good thing for you, bad thing for your supplier. :^) Pre-tinning of gold plated leads is important to: � Prevent gold embrittlement of the solder joint � Determine if the leads are solderable prior to assembly (

should gold pads be pretinned, what issues are known are there?

Electronics Forum | Wed Sep 18 17:21:19 EDT 2002 | slthomas

Dave, anything besides gold embrittlement to be concerned about if that concentration is exceeded? Never tried the stuff.


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