The DBIS1801400190A from Qotana is a RF & Microwave Isolator with Frequency 1.4 to 1.9 GHz, Average Power Forward 50 W, Average Power Reverse 5 W, Insertion Loss 0.4 to 0.5 dB, Isolation 18 to 19 dB. Tags: Module with Connector, Coaxial Isolator. More details for DBIS1801400190A can be seen below.