The SCZ-0431831618-SFSF-43 from ERAVANT is a 180 Degree Hybrid Coupler with Frequency 4 to 18 GHz, Average Power 50 W (CW), Coupling 3 dB, Amplitude Balance ±1 dB (Unbalance), Phase Balance ±12 Degree (Unbalance). Tags: Module with Connector. More details for SCZ-0431831618-SFSF-43 can be seen below.