The CU1L2581AT-1900-00 from TDK is a RF & Microwave Isolator with Frequency 1.88 to 1.92 GHz, Bandwidth 40 MHz, Average Power Forward 150 W, Average Power Reverse 70 W, Insertion Loss 0.25 dB. Tags: Drop-in, Drop-in Isolator. More details for CU1L2581AT-1900-00 can be seen below.