Physical simulation of single, hardened transistors is an essential st
ep towards a thorough understanding of the underlying basic phenomena
of components under irradiation. Results gathered from this physical,
microscopic simulation, should be confirmed by measurements on actual
components. This procedure leads to an analytical, macroscopic transis
tor modelling, well suited to the electrical simulation of complex int
egrated circuits, including thousands of elementary components, operat
ing both under the radiative and non-radiative environments.