The RFLI-300-1 from RF-Lambda is a RF & Microwave Isolator with Frequency 2 to 6 GHz, Average Power Forward 50 W, Average Power Reverse 10 W, Insertion Loss 1.2 dB, Isolation 16 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFLI-300-1 can be seen below.