The 994-037419-008 from M2 Global Technology is a RF & Microwave Isolator with Frequency 16.5 to 22 GHz, Average Power Reverse 1 W, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature -20 to 65 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for 994-037419-008 can be seen below.