The 990-120140-501 from M2 Global Technology is a RF & Microwave Circulator with Frequency 1.2 to 1.4 GHz, Average Power Forward 150 W, Insertion Loss 0.25 dB, Operating Temperature -40 to 85 Degree C. Tags: Drop-in Circulator. More details for 990-120140-501 can be seen below.