Besides offering significant advantages over traditional rigid boards, flexible circuitry is increasingly the technology of choice for military and commercial applications, including the growing ASICs market. This book addresses the many new uses, applications, and developments of flexible circuitry, the most popular form of interconnection for applications requiring size and weight reduction, better impedance, reduced labour, and easy assembly. Written by authors drawn from the largest US flex suppliers, this reference provides a ground-up perspective on modern flexible circuitry. It explores current design guidelines and uses case studies to illustrate the different thinking processes and trade-offs necessary to take full advantage of flex technology. The chapter on implementation deals with such key issues as interconnection, assembly, and circuit layout. This book aims to familiarize printed circuit designers and engineers, system engineers, and packaging engineers with the full spectrum of present-day flex circuitry principles and applications.