The UIYSC9B48T58 from UIY Inc. is a RF & Microwave Circulator with Frequency 4.8 to 5.8 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 UIYSC9B48T58 can be seen below.