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December 2006

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Subject:
From:
Lee parker <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Lee parker <[log in to unmask]>
Date:
Fri, 29 Dec 2006 13:14:05 -0500
Content-Type:
text/plain
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text/plain (123 lines)
Guy

I have several clients who have been using this technology for over eighteen 
months, these issues have not appeared. The technology was developed by 
Cookson and the porosity readings I have seen far exceed ENIG.

Best regards

Lee

J. Lee Parker, Ph.D.
JLP Consultants LLC
804 779 3389


----- Original Message ----- 
From: "Guy Ramsey" <[log in to unmask]>
To: "'TechNet E-Mail Forum'" <[log in to unmask]>; "'Lee parker'" 
<[log in to unmask]>
Sent: Friday, December 29, 2006 1:09 PM
Subject: RE: [TN] Questions on ENIG VS gold plating


> I didn't read your paper but my experience mirrors Werner's. It is very
> difficult to get a thin, even, always present electroplate. A two micro 
> inch
> minimum might easily result in spots that are thick enough to cause 
> brittle
> solder connections. A two micro inch maximum might easily fail to protect
> the nickel.
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Lee parker
> Sent: Friday, December 29, 2006 12:56 PM
> To: [log in to unmask]
> Subject: Re: [TN] Questions on ENIG VS gold plating
>
> Werner
>
> This could not be flash gold since in this process the gold thickness is
> approximately 2 micro inches, which of course is where the name 
> originated.
> The advantage over ENIG is that the porosity is greatly reduced.
>
> I am sure you will agree two micro inches of gold is not going to cause
> embrittlement. I imagine what you have is typical plated gold with uses a
> completely different and much more expensive chemistry.
>
> Best regards
>
> Lee
>
> J. Lee Parker, Ph.D.
> JLP Consultants LLC
> 804 779 3389
>
>
> ----- Original Message -----
> From: "Werner Engelmaier" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, December 29, 2006 12:47 PM
> Subject: Re: [TN] Questions on ENIG VS gold plating
>
>
> > In a message dated 12/29/06 11:25:43, [log in to unmask] writes:
> > > Many Asian shops use what they call "flash gold"
> > > which is electro plated gold over nickel.
> > >
> > Hi Lee,
> > True enough, but 2 of my clients in China had gold-embrittlement 
> > failures
> > because some of their product had too much Au on it.
> >
> > Werner
> >
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