The DC0603700710GA from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 3.7 to 7.1 GHz, Coupling 6 dB, Coupling Variation ±0.25 dB, Frequency Sensitivity ±0.5 dB, Directivity 18 dB. Tags: Module with Connectors. More details for DC0603700710GA can be seen below.