The QDI2020X from Qualwave is a RF & Microwave Isolator with Frequency 600 to 4000 MHz, Bandwidth 900 MHz, Average Power Forward 150 W, Average Power Reverse 20 W, Insertion Loss 0.25 to 0.50 dB. Tags: Drop-In, Drop-In Isolator. More details for QDI2020X can be seen below.