The DBIS1800240040A from Qotana is a RF & Microwave Isolator with Frequency 240 to 400 MHz, Average Power Forward 50 W, Average Power Reverse 5 W, Insertion Loss 0.7 to 0.8 dB, Isolation 18 to 19 dB. Tags: Module with Connector, Coaxial Isolator. More details for DBIS1800240040A can be seen below.