The CU4S0506AT-2140-00 from TDK is a RF & Microwave Isolator with Frequency 2.11 to 2.17 GHz, Bandwidth 60 MHz, Average Power Forward 5 W, Average Power Reverse 2 W, Insertion Loss 0.6 dB. Tags: Surface Mount, Surface Mount Isolator. More details for CU4S0506AT-2140-00 can be seen below.