The PDC-20-3-75 from Mini Circuits is a Directional Coupler with Frequency 1 to 150 MHz, Coupling 19.40 to 19.56 dB, Directivity 29.51 to 55.58 dB, Power 2 to 4 W, Average Power 2 to 4 W. Tags: Surface Mount. More details for PDC-20-3-75 can be seen below.