The CU4S0401AT-788-00 from TDK is a RF & Microwave Isolator with Frequency 773 to 803 MHz, Bandwidth 30 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-788-00 can be seen below.