The CU4S0401AT-737-00 from TDK is a RF & Microwave Isolator with Frequency 729 to 746 MHz, Bandwidth 17 MHz, Average Power Forward 2.5 W, Average Power Reverse 0.6 W, Insertion Loss 1 dB. Tags: Surface Mount, Surface Mount Isolator. More details for CU4S0401AT-737-00 can be seen below.