The X3C19F1-03S from TTM Technologies is a 90 Degree Hybrid Coupler with Frequency 1.7 to 2.3 GHz, Average Power 25 W, Insertion Loss 0.20 to 0.25 dB, Isolation 20 to 26 dB, Coupling 3 dB. Tags: Surface Mount. More details for X3C19F1-03S can be seen below.