The UIYBCI2528B from UIY Inc. is a RF & Microwave Isolator with Frequency 3.5 to 6.5 GHz, Bandwidth 3000 MHz, Average Power Forward 100 W, Average Power Reverse 20 W, Insertion Loss 0.6 dB. Tags: Module with Connectors, Coaxial Isolator. More details for UIYBCI2528B can be seen below.