The UIYCI2538A from UIY Inc. is a RF & Microwave Isolator with Frequency 700 MHz to 5 GHz, Average Power Forward 100 to 200 W, Average Power Reverse 100 W, Insertion Loss 0.4 to 0.5 dB, Isolation 18 to 23 dB. Tags: Module with Connector, Coaxial Isolator. More details for UIYCI2538A can be seen below.