The CU1S2403AC-780-00 from TDK is a RF & Microwave Circulator with Frequency 758 to 803 GHz, Bandwidth 45 MHz, Average Power Forward 100 W, Insertion Loss 0.25 dB, Isolation 18 dB. Tags: Surface Mount, Surface Mount Circulator. More details for CU1S2403AC-780-00 can be seen below.