The BD3150N50100AHF from TTM Technologies is a Balun with Frequency 3.1 to 7 GHz, Amplitude Balance ±0.8 to 1.5 dB, Phase Balance 3 to 20 Degree, Insertion Loss 0.7 to 0.9 dB, Power 0.6 W. Tags: Surface Mount, Unbalanced to Balanced. More details for BD3150N50100AHF can be seen below.