The SMC-2630 from Sierra Microwave Technology is a RF & Microwave Circulator with Frequency 26 to 30 GHz, Average Power Reverse 2 to 150 W, Insertion Loss 0.6 dB, Isolation 16 dB, Operating Temperature -54 to 85 Degree C. Tags: Coaxial Circulator. More details for SMC-2630 can be seen below.