The JID1280T1300M20 from JQL Electronics is a RF & Microwave Isolator with Frequency 1.28 to 1.3 GHz, Average Power Forward 600 W, Average Power Reverse 600 W, Peak Power Forward 600 W, Insertion Loss 0.25 dB. Tags: Drop-In, Drop-In Isolator. More details for JID1280T1300M20 can be seen below.