The SMI-1836 from Sierra Microwave Technology is a RF & Microwave Isolator with Frequency 1.8 to 3.6 GHz, Insertion Loss 1 dB, Isolation 14 dB, Operating Temperature 0 to 50 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for SMI-1836 can be seen below.