The FMIR1040 from Fairview Microwave is a RF & Microwave Isolator with Frequency 4 to 8 GHz, Average Power Forward 30 W, Insertion Loss 0.5 dB, Isolation 19 dB, Operating Temperature -20 to 70 Degree C. Tags: Module with Connectors, Coaxial Isolator. More details for FMIR1040 can be seen below.