The UIYBCI2528A from UIY Inc. is a RF & Microwave Isolator with Frequency 3 to 6 GHz, Average Power Forward 100 W, Average Power Reverse 20 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Module with Connector, Coaxial Isolator. More details for UIYBCI2528A can be seen below.