The JIC0431T0435N5 from JQL Electronics is a RF & Microwave Isolator with Frequency 431 to 435 MHz, Average Power Forward 100 W, Average Power Reverse 50 W, Insertion Loss 0.25 dB, Isolation 25 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC0431T0435N5 can be seen below.