The CCD12130423G from Cernex Inc is a RF & Microwave Circulator with Frequency 12.75 to 13.25 GHz, Average Power Forward 10 W, Insertion Loss 0.4 dB, Isolation 23 dB, Operating Temperature -40 to 85 Degree C. Tags: Drop-In, Drop-in Circulator. More details for CCD12130423G can be seen below.