The QDI1626D from Qualwave is a RF & Microwave Isolator with Frequency 3700 to 5000 MHz, Bandwidth 1000 MHz, Average Power Forward 100 W, Average Power Reverse 10 W, Insertion Loss 0.3 to 0.5 dB. Tags: Drop-In, Drop-In Isolator. More details for QDI1626D can be seen below.