The UIYCI5663A from UIY Inc. is a RF & Microwave Isolator with Frequency 140 to 300 MHz, Bandwidth 24 MHz, Average Power Forward 300 W, Average Power Reverse 100 W, Insertion Loss 0.4 dB. Tags: Module with Connectors, Coaxial Isolator. More details for UIYCI5663A can be seen below.