The BD0205F5050AHF from TTM Technologies is a Balun with Frequency 70 to 1000 MHz, Amplitude Balance ±0.2 to 0.6 dB, Phase Balance 1 to 3 Degree, Insertion Loss 0.9 to 3.4 dB, Power 2 W. Tags: Surface Mount, Balanced to Unbalanced. More details for BD0205F5050AHF can be seen below.