The ADC255DE from ADMOTECH is a RF & Microwave Circulator with Frequency 2.5 to 2.6 GHz, Average Power Forward 50 W, Average Power Reverse 30 W, Insertion Loss 0.4 to 0.5 dB, Isolation 18 to 20 dB. Tags: Drop-in Circulator. More details for ADC255DE can be seen below.