Radiation particles from cosmic rays and solar winds constantly permeate the biosphere, all the way to ground level, where most electronic systems must function. While electronic systems may be less sensitive to radiation than their biological counterparts, one single particle can quickly disrupt functional systems such as power supplies and digital or analog circuits. This book examines radiation effects in electronics and optoelectronics, providing design-in methods to improve the reliability of components and systems. This is essential information for practitioners, engineers, and scientists.