The BD2425J50100AHF from TTM Technologies is a Balun with Frequency 2.4 to 2.5 GHz, Amplitude Balance ±0.3 to 0.5 dB, Phase Balance 2 to 5 Degree, Insertion Loss 0.55 to 0.75 dB, Power 2 W. Tags: Surface Mount, Balanced to Unbalanced. More details for BD2425J50100AHF can be seen below.