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October 1997

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Subject:
From:
John Lohan * <[log in to unmask]>
Reply To:
TechNet Mail Forum.
Date:
Wed, 8 Oct 1997 22:01:00 +0100
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Hi Everybody,

I first circulated this message two weeks ago and was gratefull to
receive some very helpfull replys.  Perhaps there may be some new
subscribers today that haven't seen this message before ?

Let me first give a brief introduction.  Working with a University based
research group, it is part of my brief to undertake technology reviews
from time-to-time.  This effort is then supported by research activity
which in turn helps support Irish Industry.

My interest in electronic component heat transfer and in predicting
operating junction temperatures over the last six years has now lead me
closer to the area of electronic component/system reliability.  In
particular, we have identified a need to gain a better understanding for
the different environments used to expose latent manufacturing defects
within electronic systems during either the Burn-in or
Thermal/Environmental Stress Screening (ESS) Process.  These include
high temperature burn-in, temperature cycling, power-cycling, combined
power-on and temperature cycling, humidity testing, vibration testing
and even altitude testing.

While I have already accumulated many publications that describe the
impact of specific component packaging and interconnection issues on
Component Reliability, I find it difficult to trace recent Case Studies
that describe the implementation of a burn-in or ESS programme.  I would
hope that such case studies might relate the type of failures exposed to
the Environmental Test Conditions imposed, through to the type of
Product under test .

Therefore, I would greatly appreciate any helpwith this enquiry; whether
it be contact names, relevant publications or case studies.

Thanking you in advance,

John Lohan.

====================================================
Dr. John Lohan
Research Officer
PEI Technologies
Thermal Management Research Centre
University of Limerick
Ireland.

Tel: +353-61-202449
Fax: +353-61-202393
Email: [log in to unmask]
====================================================

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