The CIDU4U50325G-XX from Cernex Inc is a RF & Microwave Isolator with Frequency 400 to 500 MHz, Bandwidth 30 MHz, Average Power Forward 100 W, Insertion Loss 0.3 dB, Isolation 25 dB. Tags: Drop-In, Drop-In Isolator. More details for CIDU4U50325G-XX can be seen below.