The UIYDDC5031B from UIY Inc. is a RF & Microwave Circulator with Frequency 410 MHz to 3.5 GHz, Average Power Forward 200 W, Average Power Reverse 100 W, Insertion Loss 0.6 dB, Isolation 45 dB. Tags: Drop-in Circulator. More details for UIYDDC5031B can be seen below.