The B0110E50200AHF from TTM Technologies is a Balun with Frequency 50 MHz to 1.45 GHz, Amplitude Balance ±0.4 to 1 dB, Phase Balance 4 to 8 Degree, Insertion Loss 1.2 to 2.5 dB, Power 0.5 W. Tags: Surface Mount, Balanced to Unbalanced. More details for B0110E50200AHF can be seen below.