The DBCL2100400045A from Qotana is a RF & Microwave Circulator with Frequency 400 to 450 MHz, Average Power Forward 50 W, Average Power Reverse 50 W, Insertion Loss 0.30 to 0.35 dB, Isolation 21 to 22 dB. Tags: Coaxial Circulator. More details for DBCL2100400045A can be seen below.