The BW-N20W50+ from Mini Circuits is a 50 W coaxial fixed attenuator. It operates from DC to 18 GHz with a maximum attenuation of 21 dB, an impedance of 50 Ohms and a VSWR of 1.45:1. It is designed with heat dissipation fins to handle high power signals and is used in instrumentations, test set-ups and high power measurements. It is a light-weight device which measures 2.65in. x 2.65in.x 4.5in..