The DBIS2318301940A from Qotana is a RF & Microwave Isolator with Frequency 18.3 to 19.4 GHz, Average Power Forward 5 W, Average Power Reverse 1 W, Insertion Loss 0.45 to 0.5 dB, Isolation 23 to 24 dB. Tags: Module with Connector, Coaxial Isolator. More details for DBIS2318301940A can be seen below.