The D3008H004080 from Fujian MIcable is a Directional Coupler with Frequency 0.4 to 8 GHz, Coupling 30 dB, Coupling Variation ±0.9 dB, Amplitude Flatness ±1.3 dB, Directivity 14 dB. Tags: Module with Connectors. More details for D3008H004080 can be seen below.