The PDC-0545-6-SFF-30W from Quantic PMI (Planar Monolithics) is a Directional Coupler with Frequency 0.5 to 4.5 GHz, Coupling 6 dB, Directivity 18 dB, Average Power 2(Reflected) to 30 W(Incident), Insertion Loss 0.8 dB. Tags: Module with Connectors. More details for PDC-0545-6-SFF-30W can be seen below.