The CU4S1001AT-1767-00 from TDK is a RF & Microwave Isolator with Frequency 1.7499 to 1.7849 GHz, Bandwidth 35 MHz, Average Power Forward 20 W, Average Power Reverse 1 W, Insertion Loss 0.6 dB. Tags: Surface Mount, Surface Mount Isolator. More details for CU4S1001AT-1767-00 can be seen below.