<html><head>
<title>Maxima-SPRT Methodology for Health
Monitoring of Contact Resistance in IC Sockets
</title></head>
<body bgcolor="#ffffff">

<center><i>2008 INTERNATIONAL CONFERENCE ON PROGNOSTICS AND HEALTH MANAGEMENT</i>

<br><h2>Maxima-SPRT Methodology for Health
Monitoring of Contact Resistance in IC Sockets
</h2>
<br><br><b>Michael G. Pecht,<i> Fellow, IEEE</i></b><br>
Center for Advanced Life Cycle Engineering (CALCE)<br>University of
Maryland<br>College Park, MD 20742, USA<br><br>
<b>Leoncio D. Lopez</b><br>
RAS Computer Analysis Laboratory<br>Sun
Microsystems, Inc<br> San Diego, CA 92121 USA<br><br>


</center>

<b>Abstract:</b>

<p>The evaluation of integrated circuit sockets for
quality, reliability, and/or prognostic applications is performed
with accelerated tests and stress conditions that are defined by
industry standards. These methods typically use threshold values
to detect degradation and failures of the electrical interconnect.
However, this approach does not consider the physics of failure of
the component under test and is not sensitive enough to detect
small changes in behavior.
This paper presents a physics of failure based methodology
that, combined with a sequential probability ratio test, overcomes
the issues of the traditional approach. This new approach, called
Maxima-SPRT, enables early detection of degradation and
provides the information needed for the successful
implementation of prognostic tools. The method is validated using
an elastomer socket, a daisy chain package, and a test board
assembly.
</p>

<p><b>Index Terms:</b> Accelerated test, contact resistance, elastomer
socket, health monitoring, physics of failure</p>


<p><a href="../../fulltext/2008/08_Leoncio_maxSPRT_PHMConf.pdf">Complete article</a> is available to CALCE PHM Consortium Members.</p>

<p><font size="-2"><font color="red">© IEEE. Personal use of 
this material is permitted. However, permission to reprint/republish 
this material for advertising or promotional purposes or for creating 
new collective works for resale or redistribution to servers or lists, 
or to reuse any copyrighted component of this work in other works 
must be obtained from the IEEE.</font></font>
</p>

<hr><br>
<center>
[<a href="http://www.calce.umd.edu">Home Page</a>]
[<a href="../../">Articles Page</a>]
</center>

<center><font size="-1">Copyright � 2008 by CALCE and the University of Maryland, All Rights Reserved </font></center>

</body></html>







�