The CU4S0506AT-1842-00 from TDK is a RF & Microwave Isolator with Frequency 1.805 to 1.88 GHz, Bandwidth 75 MHz, Average Power Forward 5 W, Average Power Reverse 2 W, Insertion Loss 0.7 dB. Tags: Surface Mount, Surface Mount Isolator. More details for CU4S0506AT-1842-00 can be seen below.