The X4C09F1-30S from TTM Technologies is a Directional Coupler with Frequency 460 MHz to 1 GHz, Coupling 30 to 32 dB, Coupling Variation ±1.5 dB, Frequency Sensitivity ±1 to ±1.6 dB, Directivity 20 dB. Tags: Surface Mount. More details for X4C09F1-30S can be seen below.