The DB0603N4600ANTR from KYOCERA AVX is a 90 Degree Hybrid Coupler with Frequency 4.2 to 5 GHz, Average Power 10 W, Insertion Loss 0.5 to 0.7 dB, Isolation 12 to 15 dB, Amplitude Balance ± 0.4 to 1 dB. Tags: Surface Mount. More details for DB0603N4600ANTR can be seen below.