The UIYSC9B55T6 from UIY Inc. is a RF & Microwave Circulator with Frequency 5.5 to 6 GHz, Average Power Forward 30 W, Average Power Reverse 30 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Surface Mount Circulator. More details for UIYSC9B55T6 can be seen below.