The CD10640 from Honeywell is a RF & Microwave Isolator with Frequency 4 to 8 GHz, Insertion Loss 0.4 to 0.5 dB, Isolation 18 to 20 dB, Return Loss 18 to 20 dB, Operating Temperature -10 to 65 Degree C. Tags: Coaxial Isolator. More details for CD10640 can be seen below.