The RFXF5753 from MiniRF is a Balun with Frequency 5 MHz to 1.2 GHz, Amplitude Balance ± 1 to 2 dB, Phase Balance 10 to 18 Degree, Insertion Loss Less than 3 dB, Power 2 W. Tags: Surface Mount, Unbalanced to Balanced. More details for RFXF5753 can be seen below.