The UIYDDI3819A from UIY Inc. is a RF & Microwave Isolator with Frequency 1.45 to 3.8 GHz, Average Power Forward 60 W, Average Power Reverse 30 W, Insertion Loss 0.6 dB, Isolation 45 dB. Tags: Drop-In, Drop-In Isolator. More details for UIYDDI3819A can be seen below.