The NDC-0118 from Stellant Systems is a RF & Microwave Circulator with Frequency 1.71 to 1.85 GHz, Average Power Forward 2 W, Peak Power 100 W, Insertion Loss 0.3 to 0.5 dB, Isolation 20 to 23 dB. Tags: Drop-In, Drop-in Circulator. More details for NDC-0118 can be seen below.