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May 1998

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Subject:
From:
Alex Neussendorfer <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 1 May 1998 08:54:47 -0500
Content-Type:
text/plain
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text/plain (92 lines)
Corey,
Have you considered only gold in the connector area?  I spent many years
building PWB's, and this is often done.
Regards,
Alex

----------
> From: Lenny Kurup <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: [TN] Solder GOLD plated connector to PCB's
> Date: Friday, May 01, 1998 8:42 AM
>
> Hello Corey,
>
> It is recommended that you not solder over a gold thickness of 30 uins,
you
> will have gold embrittlement caused by the AuSn, intermetallic. If
however,
> you reduced the gold thickness to < 10 uins, the solder joints will be
> stronger, with soldering to the nickel, beneath, occuring.
>
> Regards,
> Lenny Kurup
> EMX Enterprises Ltd.
>
> On Mon, 27 Apr 1998, Cory and Lise Steeby wrote:
>
> > We are evaluating a fully gold plated (30uin) connector for a new
product.
> > I have heard that soldering a gold plated connector to a PCB can cause
a
> > brittle solder joint because of the intermetallic bonds made between
the
> > gold and solder.  The assembly is through-hole and wave soldered.  Gold
> > plating is required of the contact portion of the connector because of
> > environment and signal levels.  I am trying to weigh the gold contact
pro
> > against the gold solder joint con.
> >
> > Can anyone verify this or point me to evidence that this is not a
problem?
> >
> > Thank You
> >
> > Cory Steeby
> > [log in to unmask]
> >
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