The DC0900U10-053 from Yantel Corporation is a Directional Coupler with Frequency 750 MHz to 1.05 GHz, Coupling 8.4 to 10.9 dB, Directivity 18.6 to 19.3 dB, Average Power 5 W, Insertion Loss 0.16 to 0.18 dB. Tags: Surface Mount. More details for DC0900U10-053 can be seen below.