The HC1900E03 from Yantel Corporation is a 90 Degree Hybrid Coupler with Frequency 1.7 to 2 GHz, Average Power 120 W, Insertion Loss 0.14 to 0.15 dB, Isolation 24 to 27 dB, Coupling 3 dB. Tags: Surface Mount. More details for HC1900E03 can be seen below.