The RFLI-401-3 from RF-Lambda is a RF & Microwave Isolator with Frequency 3 to 6 GHz, Average Power Forward 10 W, Average Power Reverse 2 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFLI-401-3 can be seen below.