The JID0542T0686KM3 from JQL Electronics is a RF & Microwave Isolator with Frequency 542 to 686 MHz, Average Power Forward 30 W, Average Power Reverse 30 W, Peak Power Forward 0.3 kW, Insertion Loss 0.5 dB. Tags: Drop-In, Drop-In Isolator. More details for JID0542T0686KM3 can be seen below.