The CU4S0506BC-907-00 from TDK is a RF & Microwave Circulator with Frequency 900 to 915 MHz, Bandwidth 15 MHz, Average Power Forward 5 W, Insertion Loss 0.8 dB, Isolation 13 dB. Tags: Surface Mount, Surface Mount Circulator. More details for CU4S0506BC-907-00 can be seen below.