The 994-037855-003 from M2 Global Technology is a RF & Microwave Isolator with Frequency 8 to 12 GHz, Average Power Reverse 10 W, Insertion Loss 0.4 dB, Isolation 18 dB, Operating Temperature 0 to 50 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for 994-037855-003 can be seen below.