A component for detecting electromagnetic radiation comprises: a housing defining a chamber placed under a vacuum or underpressure, one of the faces of the housing including a window which is transparent to the radiation to be detected and the chamber including at least one detector which is used to detect the radiation in question and is arranged inside said chamber essentially against the transparent window, a getter in order to maintain the vacuum or underpressure in the chamber at an acceptable level, and a thermal stabilization device for ensuring regulation of temperature of the detector(s). The thermal stabilization device consists of a heating resistive element which is integrated into the mass of one of the walls defining the housing.