The RFSL2878D-T40 from RF-CI is a RF & Microwave Isolator with Frequency 5 to 6.5 GHz, Average Power Forward 50 W, Average Power Reverse 40 W, Peak Power Forward 0.5 kW, Insertion Loss 0.5 to 0.6 dB. Tags: Drop-In, Drop-In Isolator. More details for RFSL2878D-T40 can be seen below.