The UIYBCI4040B from UIY Inc. is a RF & Microwave Isolator with Frequency 1.85 to 3.8 GHz, Average Power Forward 100 W, Average Power Reverse 30 W, Insertion Loss 0.7 dB, Isolation 17 dB. Tags: Module with Connector, Coaxial Isolator. More details for UIYBCI4040B can be seen below.