The RFLI-401-1 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 0.3 dB, Isolation 25 dB. Tags: Module with Connector, Coaxial Isolator. More details for RFLI-401-1 can be seen below.