The SKYFR-001389 from Skyworks Solutions is a RF & Microwave Circulator with Frequency 2.11 to 2.17 GHz, Average Power Forward 20 W, Peak Power 100 W, Insertion Loss 0.15 to 0.25 dB, Isolation 18 to 22 dB. Tags: Surface Mount Circulator. More details for SKYFR-001389 can be seen below.