The UIYDMC87A from UIY Inc. is a RF & Microwave Circulator with Frequency 14 to 18 GHz, Bandwidth 1000 MHz, Average Power Forward 10 W, Average Power Reverse 3 W, Insertion Loss 0.45 dB. Tags: Microstrip, Microstrip Circulator. More details for UIYDMC87A can be seen below.