The SMD1300-T1295 from Mercury Systems is a RF & Microwave Circulator with Frequency 12.7 to 13.2 GHz, Bandwidth 500 MHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.5 dB. Tags: Microstrip Circulator. More details for SMD1300-T1295 can be seen below.