The UIYBCI6434A from UIY Inc. is a RF & Microwave Isolator with Frequency 2 to 4 GHz, Average Power Forward 100 W, Average Power Reverse 30 W, Insertion Loss 1.2 dB, Isolation 36 dB. Tags: Module with Connector, Coaxial Isolator. More details for UIYBCI6434A can be seen below.