The JDC-20-3-75+ from Mini Circuits is a Directional Coupler with Frequency 1 to 250 MHz, Coupling 19.22 to 19.45 dB, Directivity 18.52 to 31.3 dB, Power 0.5 to 1 W, Average Power 0.5 to 1 W. Tags: Surface Mount. More details for JDC-20-3-75+ can be seen below.