The PDC-20-3+ from Mini Circuits is a Directional Coupler with Frequency 0.2 to 250 MHz, Coupling 19.33 to 19.42 dB, Directivity 29.83 to 39.65 dB, Power 1.5 to 4 W, Average Power 1.5 to 4 W. Tags: Surface Mount. More details for PDC-20-3+ can be seen below.