The PDC-15-21+ from Mini Circuits is a Directional Coupler with Frequency 1 to 500 MHz, Coupling 14.63 to 14.92 dB, Directivity 27.78 to 55.63 dB, Power 1 to 2 W, Average Power 1 to 2 W. Tags: Surface Mount. More details for PDC-15-21+ can be seen below.