The B0322J5050AHF from Anaren Inc is a Balun with Frequency 300 MHz to 2.2 GHz, Amplitude Balance ± 1.2 dB, Phase Balance 20 Degree, Insertion Loss 1.6 dB, Power 2 W. Tags: Surface Mount, Unbalanced to Balanced. More details for B0322J5050AHF can be seen below.