The XC1900A-03S from TTM Technologies is a 90 Degree Hybrid Coupler with Frequency 1.7 to 2 GHz, Average Power 150 W, Insertion Loss 0.08 to 0.15 dB, Isolation 23 to 27 dB, Coupling 3 dB. Tags: Surface Mount. More details for XC1900A-03S can be seen below.