The RFSL8901 from RF-CI is a RF & Microwave Isolator with Frequency 2 to 6 GHz, Average Power Forward 50 W, Average Power Reverse 20 W, Peak Power Forward 0.5 kW, Insertion Loss 1 to 1.4 dB. Tags: Drop-In, Drop-In Isolator. More details for RFSL8901 can be seen below.