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Reply To: | TechNet E-Mail Forum. |
Date: | Wed, 21 Oct 1998 14:08:24 -0500 |
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Reggie
Did I miss something? Your product operating temperature is above the melting point of the 63/37
solder you are using?
I suppose my major concern on the long term reliability of solder joints operating in a high
temperature environment would be embrittlement due to intermetalic growth.
Gary Camac
Rupert, Martha L. wrote:
> Reggie,
>
> I remember an article published in "SMT's The Next Step" (the little
> "brochure" which comes with the SMT magazine) written by Jennie Hwang.
> (These "brochures" aren't dated so I can't tell you exactly which month to
> look at.) Part of the article noted the change in physical property of
> solder in response to change (basically an increase) in temperature. The
> article included an interesting graph depicting this change in solder
> physical property vs temperature.
>
> I underlined the word solder because that was the main focus; not a solder
> joint. However, I believe there was some reference to solder joints.
>
> I believe I kept this article. If you'd like, send me your fax and when I
> find it, I'll forward it to you if you'd like.
>
> Martha Rupert
> AMP Incorporated
> [log in to unmask]
>
> > -----Original Message-----
> > From: Malli, Reggie [SMTP:[log in to unmask]]
> > Sent: Tuesday, October 20, 1998 4:44 PM
> > To: [log in to unmask]
> > Subject: [TN] Thermal Aging Of Solder Joints
> > Importance: High
> >
> > Hello there!
> > I'ld like to get some information regarding the thermal
> > aging of solder joints, particularly with the following conditions:
> >
> > 1. Solder used:
> > 63/37 and 96/04 (4% silver)
> >
> > 2. Product operating temperature; 187C
> >
> > What I'm really looking for is the behaviour of solder joint
> > strength as a function of temperature. If you have any related reports or
> > literature, please email it to me or link me to the source.
> >
> > Thanks for your help,
> >
> > Sincerely,
> >
> > Reggie Malli
> > Manager Process Engineering
> > Glenayre Manufacturing Ltd.
> > Phone: 604-293-1611
> > Fax: 604-293-4390
> > Email: [log in to unmask]
> >
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