The X3C20F1-05S from TTM Technologies is a Directional Coupler with Frequency 1.7 to 2.3 GHz, Coupling 5 dB, Coupling Variation ±0.2 to ±0.3 dB, Directivity 20 dB, Average Power 25 W. Tags: Surface Mount. More details for X3C20F1-05S can be seen below.