The ZUDC10-5R23-S+ from Mini Circuits is a Directional Coupler with Frequency 0.5 to 2 GHz, Coupling 10 dB, Coupling Variation ±1.0 dB, Directivity 23 to 32 dB, Average Power 50 W. Tags: Module with Connectors. More details for ZUDC10-5R23-S+ can be seen below.