The RFSL8806 from RF-CI is a RF & Microwave Isolator with Frequency 2.1 to 4.2 GHz, Average Power Forward 50 W, Average Power Reverse 20 W, Peak Power Forward 0.5 kW, Insertion Loss 0.5 to 0.7 dB. Tags: Drop-In, Drop-In Isolator. More details for RFSL8806 can be seen below.