The QDI1313M from Qualwave is a RF & Microwave Isolator with Frequency 1700 to 6000 MHz, Bandwidth 800 MHz, Average Power Forward 60 W, Average Power Reverse 20 W, Insertion Loss 0.30 to 0.45 dB. Tags: Drop-In, Drop-In Isolator. More details for QDI1313M can be seen below.