The NDC-8016 from Stellant Systems is a RF & Microwave Circulator with Frequency 8 to 16 GHz, Average Power Forward 2 W, Peak Power 3 W, Insertion Loss 0.5 to 0.7 dB, Isolation 14 to 16 dB. Tags: Drop-In, Drop-in Circulator. More details for NDC-8016 can be seen below.