The JIM0811T0821S1R from JQL Electronics is a RF & Microwave Isolator with Frequency 811 to 821 MHz, Average Power Forward 100 W, Average Power Reverse 5 W, Insertion Loss 0.25 dB, Isolation 22 dB. Tags: Surface Mount, Surface Mount Isolator. More details for JIM0811T0821S1R can be seen below.