The PE8315 from Pasternack Enterprises Inc is a RF & Microwave Isolator with Frequency 4 to 18 GHz, Average Power Forward 10 W, Average Power Reverse 10 W, Insertion Loss 1.5 dB, Isolation 15 dB. Tags: Module with Connector, Coaxial Isolator. More details for PE8315 can be seen below.