The RFSL8551N from RF-CI is a RF & Microwave Isolator with Frequency 1.25 to 2.5 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: Module with Connector, Coaxial Isolator. More details for RFSL8551N can be seen below.