The SC5100BD from Synergy Microwave Corporation is a Bi-Directional Coupler with Frequency 5 MHz to 1 GHz, Coupling 10 dB, Coupling Variation ±0.7 dB (Flatness), Power 1 W, Insertion Loss 0.8 to 1.9 dB. Tags: Surface Mount. More details for SC5100BD can be seen below.