The CU4S0506AC-1842-00 from TDK is a RF & Microwave Circulator with Frequency 1.805 to 1.88 GHz, Bandwidth 75 MHz, Average Power Forward 5 W, Insertion Loss 0.75 dB, Isolation 13 dB. Tags: Surface Mount, Surface Mount Circulator. More details for CU4S0506AC-1842-00 can be seen below.