INTRODUCTION
Today's global society on the move has created the demand for a growing number of portable products, from mobile computers and telecommunication devices to a variety of consumer products. Building these products has become a challenge for manufacturers around the world. Coupled with the challenges of manufacturing these products are the challenges of packaging and assembling the ICs. The main drivers for the packaging in these highly functional, miniaturized products are small form factor and cost. There are a multitude of packaging solutions in use or under development to meet the needs of future portable products. Many companies are turning to small, high density mounting in the form of ball grid arrays (BGA), chip-size packages (CSP), and flip chip.