The DC30-003080SF from Corech Microwave is a Directional Coupler with Frequency 0.3 to 8 GHz, Coupling 30 dB, Coupling Variation ±2 dB (Balance), Directivity 13 dB, Average Power 50 W (CW). Tags: Module with Connectors. More details for DC30-003080SF can be seen below.