The RFLI-601A-6 from RF-Lambda is a RF & Microwave Isolator with Frequency 12 to 18 GHz, Average Power Forward 10 W, Average Power Reverse 2 W, Insertion Loss 0.6 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFLI-601A-6 can be seen below.