The JIC3400T4800SMSF1 from JQL Electronics is a RF & Microwave Isolator with Frequency 3.4 to 4.8 GHz, Average Power Forward 10 W, Average Power Reverse 10 W, Insertion Loss 0.35 dB, Isolation 21 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC3400T4800SMSF1 can be seen below.