The UIYDDC11256A4P from UIY Inc. is a RF & Microwave Circulator with Frequency 140 to 300 MHz, Bandwidth 40 MHz, Average Power Forward 300 W, Average Power Reverse 300 W, Insertion Loss 0.8 dB. Tags: Drop-in, Drop-in Circulator. More details for UIYDDC11256A4P can be seen below.