The X3C06A4-03S from TTM Technologies is a 90 Degree Hybrid Coupler with Frequency 410 to 860 MHz, Average Power 275 to 450 W, Insertion Loss 0.15 to 0.2 dB, Isolation 20 dB, Coupling 3 dB. Tags: Surface Mount. More details for X3C06A4-03S can be seen below.