The JIC0315T0433N5 from JQL Electronics is a RF & Microwave Isolator with Frequency 315 to 433 MHz, Average Power Forward 150 W, Average Power Reverse 50 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC0315T0433N5 can be seen below.