The DDC17701970 from DEEWAVE Electronics is a RF & Microwave Circulator with Frequency 17.7 to 19.7 GHz, Average Power Forward 10 W, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature -40 to 85 Degree C. Tags: Drop-in Circulator. More details for DDC17701970 can be seen below.