The ZDDC10-K5R44W from Mini Circuits is a Dual Directional Coupler with Coupling 10 dB, Coupling Variation ±1.0( Flatness), Frequency 0.5 to 40 GHz, Power 16 W, Insertion Loss 1.6 to 5.0 dB. Tags: Module with Connectors. More details for ZDDC10-K5R44W can be seen below.