The UIYCDI3928A from UIY Inc. is a RF & Microwave Isolator with Frequency 3.5 to 7 GHz, Average Power Forward 60 W, Average Power Reverse 20 W, Insertion Loss 0.6 dB, Isolation 45 dB. Tags: Module with Connector, Coaxial Isolator. More details for UIYCDI3928A can be seen below.