The DB0603N5800ANTR from KYOCERA AVX is a 90 Degree Hybrid Coupler with Frequency 5.6 to 6 GHz, Average Power 10 W, Insertion Loss 0.4 to 0.9 dB, Isolation 12 to 17 dB, Coupling 3 Db. Tags: Surface Mount. More details for DB0603N5800ANTR can be seen below.