A comparison between electrical characteristics of 1.2 kV Si-PiN and 4H-SiC Schottky/JBS rectifiers is presented. The 4H-SiC rectifiers are characterised in the 25degC-300degC range while the Si-PiN is tested up to 200degC due to the Si temperature limitation 4H-SiC rectifiers exhibit superior temperature performances and their design can be adapted to a specific applications.