Abstract: The invention relates to a ceramic cooling and heating body for controlling the temperature of components, wherein the cooling and heating body consists of a plate-shaped support with a front side, an opposite rear side and side faces connecting the front side to the rear side, and metallizations, connected to the support, are arranged on the front side and/or the rear side, and the support has cooling elements. In order to be able to control the temperature of any electrical or electronic component, it is proposed according to the invention that a heating structure is affixed to the front side and/or the rear side.