The UIYBDC5028B from UIY Inc. is a RF & Microwave Circulator with Frequency 350 MHz to 6.5 GHz, Average Power Forward 100 W, Average Power Reverse 100 W, Insertion Loss 1.2 dB, Isolation 34 dB. Tags: Drop-in Circulator. More details for UIYBDC5028B can be seen below.