The MAFR-000399-000001 from Skyworks Solutions is a RF & Microwave Circulator with Frequency 1.45 to 1.5 GHz, Average Power Forward 200 W, Peak Power 1000 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Drop-in Circulator. More details for MAFR-000399-000001 can be seen below.