The DC20-030080SF from Corech Microwave is a Directional Coupler with Frequency 3 to 8 GHz, Coupling 20 dB, Coupling Variation ±1 dB (Balance), Directivity 20 to 22 dB, Average Power 50 W (CW). Tags: Module with Connectors. More details for DC20-030080SF can be seen below.