The RFXF0016 from MiniRF is a Balun with Frequency 5 to 100 MHz, Amplitude Balance ± 0.2 to 1 dB, Phase Balance 2 to 12 Degree, Insertion Loss 1.75 dB, Power 2 W. Tags: Surface Mount, Unbalanced to Balanced. More details for RFXF0016 can be seen below.