The UIYSI25A from UIY Inc. is a RF & Microwave Isolator with Frequency 410 MHz to 3.5 GHz, Average Power Forward 100 W, Average Power Reverse 10 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Surface Mount, Surface Mount Isolator. More details for UIYSI25A can be seen below.