The DB0603N3000ANTR from KYOCERA AVX is a 90 Degree Hybrid Coupler with Frequency 2.85 to 3.15 GHz, Average Power 10 W, Insertion Loss 0.2 to 0.3 dB, Isolation 15 to 26 dB, Coupling 3 Db. Tags: Surface Mount. More details for DB0603N3000ANTR can be seen below.