The DC4859J5005AHF from TTM Technologies is a Directional Coupler with Frequency 4.7 to 5.9 GHz, Coupling 4.4 to 5.6 dB, Frequency Sensitivity ±0.03 to 0.2 dB, Directivity 14 to 19.4 dB, Power 5 W. Tags: Surface Mount. More details for DC4859J5005AHF can be seen below.