The UIYDDC3819A4P from UIY Inc. is a RF & Microwave Circulator with Frequency 1.45 to 3.8 GHz, Bandwidth 587.5 MHz, Average Power Forward 60 W, Average Power Reverse 60 W, Insertion Loss 0.6 dB. Tags: Drop-in, Drop-in Circulator. More details for UIYDDC3819A4P can be seen below.