The TC4-13TX+ from Mini Circuits is a Balun with Frequency 100 MHz to 1 GHz, Amplitude Balance ± 0.04 to 1.29 dB, Phase Balance 0.09 to 13.02 Degree, Insertion Loss 0.85 to 1.58 dB, Current 30 mA. Tags: Surface Mount, Unbalanced to Balanced. More details for TC4-13TX+ can be seen below.