The NDC-4080 from Stellant Systems is a RF & Microwave Circulator with Frequency 4 to 8 GHz, Average Power Forward 2 W, Peak Power 30 W, Insertion Loss 0.4 to 0.5 dB, Isolation 17 to 20 dB. Tags: Drop-In, Drop-in Circulator. More details for NDC-4080 can be seen below.