The ZFT300N-18M-B from ZTS Technologies is a Fixed Coaxial Termination that operates from DC to 18 GHz. It can handle up to 300 watts of power @25? (derated linearly to 0 watts @ 125?). This 50-ohm termination can operate over a wide temperature range from -55 to 125 degrees and measures 110×120×305 mm with an N-type (M/F) connector.