The JID1300T1850M5 from JQL Electronics is a RF & Microwave Isolator with Frequency 1.3 to 1.85 GHz, Average Power Forward 50 W, Average Power Reverse 50 W, Insertion Loss 0.5 dB, Isolation 18 dB. Tags: Drop-In, Drop-In Isolator. More details for JID1300T1850M5 can be seen below.