The IS-77/SMI/A from MCLI is a RF & Microwave Isolator with Frequency 12.4 to 18 GHz, Average Power Forward 25 W, Peak Power Forward 0.1 kW, Insertion Loss 0.4 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for IS-77/SMI/A can be seen below.