The UIYCI4580A from UIY Inc. is a RF & Microwave Isolator with Frequency 250 MHz to 1.5 GHz, Average Power Forward 100 to 400 W, Average Power Reverse 100 to 250 W, Insertion Loss 0.3 to 0.7 dB, Isolation 18 to 25 dB. Tags: Module with Connector, Coaxial Isolator. More details for UIYCI4580A can be seen below.