The DC20-005020SF from Corech Microwave is a Directional Coupler with Frequency 0.5 to 2 GHz, Coupling 20 dB, Coupling Variation ±1 dB (Balance), Directivity 20 dB, Average Power 50 W (CW). Tags: Module with Connectors. More details for DC20-005020SF can be seen below.