The RFSL8988 from RF-CI is a RF & Microwave Isolator with Frequency 10 to 20 GHz, Average Power Forward 15 W, Average Power Reverse 2 W, Peak Power Forward 0.25 kW, Insertion Loss 0.7 to 0.9 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFSL8988 can be seen below.