The CU4S0401BT-2593-00 from TDK is a RF & Microwave Isolator with Frequency 2.496 to 2.69 GHz, Bandwidth 194 MHz, Average Power Forward 2.5 W, Average Power Reverse 0.6 W, Insertion Loss 0.9 dB. Tags: Surface Mount, Surface Mount Isolator. More details for CU4S0401BT-2593-00 can be seen below.