The KTBI-601K from Kete Microwave is a RF & Microwave Isolator with Frequency 4 to 10 GHz, Average Power Reverse 5 W, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature -30 to 70 Degree C. Tags: Module with Connectors, Coaxial Isolator. More details for KTBI-601K can be seen below.