WEIFENG LIU, PHD, is an Interconnect Specialist at the Business Critical Systems Organization of Hewlett Packard Company. A member of IMAPS and IEEE, he has published numerous papers and has one patent pending. MICHAEL PECHT, PHD, is a professional engineer and a Fellow of IEEE and ASME. He is the founder and director of the CALCE Electronic Products and Systems Center at the University of Maryland. Among the awards he has received are the 3M Research Award, the IEEE Undergraduate Teaching Award, and the IMAPS William D. Ashman Memorial Achievement Award for his contributions in the field. He has written sixteen books on electronic product development, served as chief editor of the IEEE Transactions on Reliability, and served on the Advisory Board of IEEE Spectrum.