The X3C35F1-03S from TTM Technologies is a 90 Degree Hybrid Coupler with Frequency 3.3 to 4.2 GHz, Average Power 22 to 25 W, Insertion Loss 0.2 to 0.3 dB, Isolation 20 to 23 dB, Coupling 3 dB. Tags: Surface Mount. More details for X3C35F1-03S can be seen below.