The 094-037143-003 from M2 Global Technology is a RF & Microwave Isolator with Frequency 3.4 to 4.8 GHz, Average Power Reverse 10 W, Insertion Loss 0.5 dB, Isolation 20 dB, Operating Temperature 0 to 50 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for 094-037143-003 can be seen below.