The TCD-10-4-75X+ from Mini Circuits is a Directional Coupler with Frequency 5 MHz to 1 GHz, Coupling 9.82 to 9.96 dB, Directivity 14.81 to 22.91 dB, Power 1 W, Average Power 1 W. Tags: Surface Mount. More details for TCD-10-4-75X+ can be seen below.