The DDC180380C from DEEWAVE Electronics is a RF & Microwave Circulator with Frequency 1.8 to 3.8 GHz, Bandwidth 70 to 200 MHz, Average Power Forward 100 W, Insertion Loss 0.25 to 0.50 dB, Isolation 20 to 23 dB. Tags: Drop-in Circulator. More details for DDC180380C can be seen below.