Werner,

I assume that grain structure/intermetallic/oxidation growth is not a linear
process with respect to conditioning time (correct me if I am wrong). Compared
to 100 hrs exposure at 125C, would longer conditioning, say 500 hrs, yield
significant changes in the properties of the solder material and its fatigue
life or does the bulk of this process occur during the initial 100 hrs?

Thomas Buschor
Advanced Manufacturing Technology
Harris Corp., Melbourne, Florida
Tel:  321.729.3288
Fax: 321.729.7348
Email:  [log in to unmask]


-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Thursday, February 08, 2001 9:49 PM
To: [log in to unmask]; Buschor, Thomas
Subject: Re: [TN] Test Vehicle Conditioning


Hi Tom,
100hrs @ 125C and 300hrs @ 100C are to represent about 1 year at 25C.
Werner Engelmaier

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