The SFC1020 from Fairview Microwave is a RF & Microwave Circulator with Frequency 1 to 2 GHz, Average Power Forward 10 W, Insertion Loss 0.6 dB, Isolation 17 dB, Operating Temperature -25 to 80 Degree C. Tags: Coaxial Circulator. More details for SFC1020 can be seen below.