The NDC-2729 from Stellant Systems is a RF & Microwave Circulator with Frequency 2.7 to 2.9 GHz, Average Power Forward 2 W, Peak Power 5 W, Insertion Loss 0.25 to 0.3 dB, Isolation 20 to 23 dB. Tags: Drop-In, Drop-in Circulator. More details for NDC-2729 can be seen below.