The DC2337J5020AHF from TTM Technologies is a Directional Coupler with Frequency 2.3 to 3.7 GHz, Coupling 19 to 22.9 dB, Frequency Sensitivity ±0.01 to 0.71 dB, Directivity 9.7 to 18.7 dB, Power 2 W. Tags: Surface Mount. More details for DC2337J5020AHF can be seen below.