I too would like this report sent to me.
Thank you.
Rich Kiolbasa
AGCS, A Division of Lucent Technologies
Achim Neu wrote:
> Hi David,
>
> I also would like to get a copy of the report if possible.
>
> Thanks
> Achim
>
> David Suraski schrieb:
>
> > Hi All,
> >
> > Happy holidays! We've also done some tests pertaining to Cu and Pb in a
> > Pb-Free solder that will not be named due to fears of being flamed.
> >
> > Anyhoo, we found that Cu would not dissolve into this composition (which had
> > an original Cu concentration of 0.7%) above 1% in a solder bath of 500F. As
> > an aside, this alloy proved superior as far as limiting Cu dissolution as
> > compared to Sn/Pb, Sn/Ag, and even Sn/Cu. I imagine that this probably is
> > quite similar to Mr. Gickler's results.
> >
> > As far as Pb, the above alloy was tested with 0.5% pb-contamination (which
> > was deemed to be a realistic contamination level that might be experieinced
> > in the field) with "little or no degradation" to solder joint reliability.
> >
> > I realize that the above may sound a bit subjective, but it actually was
> > determined through objective experimentation. If anyone (including Mr. Yuen,
> > of course) would like to see a copy of these tests and their results, please
> > feel free to contact me and I'll ship it off.
> >
> > Thanks and happy new year,
> >
> > David
> > AIM
> > ----- Original Message -----
> > From: Bill Hampshire <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Tuesday, December 28, 1999 7:08 PM
> > Subject: Re: [LF] Impacts of lead and copper...
> >
> > > Hey, Mike,
> > >
> > > I bet you are talking about the paper by Al Gickler at SMI '97. I was
> > > the chair of that session and was happy to get that paper from Al. But
> > > the audience was less than appreciative. Their comments were that the
> > > information was too elementary and non-discriminating. I think it was
> > > simply about two years ahead of its time. Al has done some of the "dirty
> > > work" that needs to be done to test lead-frees. He found, not
> > > surprisingly, that lead-free compositions, already saturated with copper,
> > > did not pick up additional copper in simulated use. No surprise, I
> > > guess, but someone has to prove it!
> > >
> > > Re: reliability testing- check back thru the archives of this forum,
> > > especially for some of the European comments, where they have some
> > > experience testing lead-frees.
> > >
> > > Bill Hampshire
> > >
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> > > Assemblies.
> > > Please visit IPC's Center for Lead-Free Electronics Assembly
> > > (http://www.leadfree.org ) for additional information.
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> > IPCWorks -October 25-28 featuring an International Summit on Lead-Free Electronic
> > Assemblies.
> > Please visit IPC's Center for Lead-Free Electronics Assembly
> > (http://www.leadfree.org ) for additional information.
> > For technical support contact Gayatri Sardeshpande [log in to unmask] or 847-790-5365.
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> with following text in the body:
> To subscribe: SUBSCRIBE Leadfree <your full name>
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> ################################################################
> IPCWorks -October 25-28 featuring an International Summit on Lead-Free Electronic
> Assemblies.
> Please visit IPC's Center for Lead-Free Electronics Assembly
> (http://www.leadfree.org ) for additional information.
> For technical support contact Gayatri Sardeshpande [log in to unmask] or 847-790-5365.
> ################################################################
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Leadfree E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask]
with following text in the body:
To subscribe: SUBSCRIBE Leadfree <your full name>
To unsubscribe: SIGNOFF Leadfree
################################################################
IPCWorks -October 25-28 featuring an International Summit on Lead-Free Electronic
Assemblies.
Please visit IPC's Center for Lead-Free Electronics Assembly
(http://www.leadfree.org ) for additional information.
For technical support contact Gayatri Sardeshpande [log in to unmask] or 847-790-5365.
################################################################
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