Here are some more

!!!!!!!!!!!!

Epoxies do not bond well to tin or tin alloy surfaces, electrical
reliability of the Sn- Ag interface is also a questionable.
These fundamental issues are being addressed by the various suppliers, but
addressed is not the same as solved. Check with them first to see progress
before committing.

Regards

Mike Fenner

Applications Engineer, European Operations
Indium Corporation
 T: + 44 1908 580 400
M: + 44 7810 526 317
 F: + 44 1908 580 411
 E: [log in to unmask]
W: www.indium.com
Leadfree: www.Pb-Free.com



-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Misner, Bruce
Sent: Tuesday, February 11, 2003 5:00 PM
To: [log in to unmask]
Subject: Re: [TN] conductive epoxy


James,

The only thing wrong with Steve's response was that he didn't use enough
exclamation points...I agree with him completely.

Regards,
Bruce Misner

> ----------
> From:         James TerVeen[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;James TerVeen
> Sent:         Tuesday, February 11, 2003 8:46 AM
> To:   [log in to unmask]
> Subject:      [TN] conductive epoxy
>
> I have a customer who wants to epoxy a multilayer capacitor to the
> following and is not sure what conductive epoxy would be the best.     The
> terminations on the capacitor is nickel with a tin overplate.
> Any suggestions.
>
> The capacitors are to be installed in hermeticly sealed  hybrid oscillator
> circuits.
> The internal enviornment is either a vacuum or backfilled nitrogen.
> The substrates are Alumina  and the metalization is gold or silver.
> The ambient temperature range is from -55 deg.c. to +125 deg.c.
>
> Thanks
>
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