The PDC-20-1+ from Mini Circuits is a Directional Coupler with Frequency 25 to 400 MHz, Coupling 20.99 to 21.37 dB, Directivity 29.49 to 45.84 dB, Power 3 to 5 W, Average Power 3 to 5 W. Tags: Surface Mount. More details for PDC-20-1+ can be seen below.