The JIM0454T0458A0 from JQL Electronics is a RF & Microwave Isolator with Frequency 454 to 458 MHz, Average Power Forward 10 W, Average Power Reverse 5 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Surface Mount, Surface Mount Isolator. More details for JIM0454T0458A0 can be seen below.