The BD2425NCSR from TTM Technologies is a Balun with Frequency 2.4 to 2.5 GHz, Amplitude Balance ±0.2 to 0.5 dB, Phase Balance 2 to 4 Degree, Insertion Loss 0.35 to 1 dB, Power 1 W. Tags: Surface Mount, Unbalanced to Balanced. More details for BD2425NCSR can be seen below.