The COI18260818D from Cernex Inc is a RF & Microwave Isolator with Frequency 18 to 26.5 GHz, Average Power Forward 5 W, Insertion Loss 0.8 dB, Isolation 18 dB, Operating Temperature -20 to 65 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for COI18260818D can be seen below.