The BD2425N5050AHF from Anaren Inc is a Balun with Frequency 2.4 to 2.5 GHz, Amplitude Balance ± 0.9 dB, Phase Balance 7 Degree, Insertion Loss 0.9 dB, Power 1 W. Tags: Surface Mount, Unbalanced to Balanced. More details for BD2425N5050AHF can be seen below.