The ZCDC10-K0644+ from Mini Circuits is a Directional Coupler with Frequency 6 to 40 GHz, Coupling 10 dB, Coupling Variation ±1.3 dB, Directivity 10 to 26 dB, Average Power 17 W. Tags: Module with Connectors. More details for ZCDC10-K0644+ can be seen below.