The UIYDI5356A from UIY Inc. is a RF & Microwave Isolator with Frequency 300 MHz to 1.5 GHz, Average Power Forward 500 W, Average Power Reverse 30 W, Insertion Loss 0.4 to 0.5 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for UIYDI5356A can be seen below.