In the last few years, the number of missions devoted to the exploration of the universe has increased. Predictions show that the number of missions in the current decade is expected to be almost three times the number of missions in the previous decade, without considering low-cost and low-weight missions, like the ones including CubeSats. Therefore, the number of electronic devices and the job complexity assigned to them is increasing as well. Electronic devices must be tailored to work in a reliable way. Whatever is the purpose of a spacecraft, from the smallest one to a complete rover exploring another planet.