The MAFR-000645-000001 from Skyworks Solutions is a RF & Microwave Circulator with Frequency 960 MHz to 1.21 GHz, Average Power Forward 200 W, Peak Power 1000 W, Insertion Loss 0.5 dB, Isolation 16 dB. Tags: Drop-in Circulator. More details for MAFR-000645-000001 can be seen below.