The DDC350650C from DEEWAVE Electronics is a RF & Microwave Circulator with Frequency 3.5 to 6.5 GHz, Bandwidth 300 to 600 MHz, Average Power Forward 20 W, Insertion Loss 0.30 to 0.40 dB, Isolation 20 to 23 dB. Tags: Drop-in Circulator. More details for DDC350650C can be seen below.