The SMD1300-T0300 from Mercury Systems is a RF & Microwave Circulator with Frequency 8.5 to 10.5 GHz, Bandwidth 2000 MHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB. Tags: Microstrip Circulator. More details for SMD1300-T0300 can be seen below.