The HN05W03F from EMC Technology & Florida RF Labs is a 90 Degree Hybrid Coupler with Frequency 15 to 18.5 GHz, Average Power 50 W, Insertion Loss 0.7 dB, Isolation 12 to 18 dB, Coupling 3 dB. Tags: Surface Mount. More details for HN05W03F can be seen below.