The DBCL3502000400K from Qotana is a RF & Microwave Circulator with Frequency 2 to 4 GHz, Average Power Forward 100 W, Average Power Reverse 10 W, Insertion Loss 0.90 to 1 dB, Isolation 32 to 35 dB. Tags: Coaxial Circulator. More details for DBCL3502000400K can be seen below.