The PDC-820-20-25W-SFF from Quantic PMI (Planar Monolithics) is a Directional Coupler with Frequency 8 to 20 GHz, Coupling 20 dB, Directivity 12 dB, Average Power 25(Reflected/Incident), Insertion Loss 1 dB. Tags: Module with Connectors. More details for PDC-820-20-25W-SFF can be seen below.