The UIYDMC109B from UIY Inc. is a RF & Microwave Circulator with Frequency 8 to 12 GHz, Bandwidth 800 MHz, Average Power Forward 10 W, Average Power Reverse 5 W, Insertion Loss 0.45 dB. Tags: Microstrip, Microstrip Circulator. More details for UIYDMC109B can be seen below.