The HYB-5431-T3-SMA-79 from Cinch Connectivity Solutions is a 180 Degree Hybrid Coupler with Frequency 2 to 18 GHz, Average Power 20 W, Coupling 3 dB, Insertion Loss 4.5 dB, Isolation 12 dB. Tags: Module with Connector. More details for HYB-5431-T3-SMA-79 can be seen below.