The SMI-1826H from Sierra Microwave Technology is a RF & Microwave Isolator with Frequency 18 to 26.5 GHz, Insertion Loss 1.2 dB, Isolation 36 dB, Operating Temperature -54 to 85 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for SMI-1826H can be seen below.