The C1015J5003AHF from TTM Technologies is a 90 Degree Hybrid Coupler with Frequency 1 to 1.5 GHz, Average Power 4 W, Insertion Loss 0.5 to 0.7 dB, Isolation 20 to 25 dB, Coupling 3 dB. Tags: Surface Mount. More details for C1015J5003AHF can be seen below.