The SMD1300-T1085 from Mercury Systems is a RF & Microwave Circulator with Frequency 10 to 11.7 GHz, Bandwidth 1700 MHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB. Tags: Microstrip Circulator. More details for SMD1300-T1085 can be seen below.