The QDC5050A from Qualwave is a RF & Microwave Circulator with Frequency 1500 to 3000 MHz, Bandwidth 1500 MHz, Average Power Forward 10 to 100 W, Insertion Loss 0.5 to 0.7 dB, Isolation 17 to 18 dB. Tags: Drop-In, Drop-in Circulator. More details for QDC5050A can be seen below.