The UIYSC9B87T105 from UIY Inc. is a RF & Microwave Circulator with Frequency 8.7 to 10.5 GHz, Average Power Forward 30 W, Average Power Reverse 30 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Surface Mount Circulator. More details for UIYSC9B87T105 can be seen below.