The TCM2-43X+ from Mini Circuits is a Balun with Frequency 10 MHz to 4 GHz, Amplitude Balance ± 0.03 to 0.81 dB, Phase Balance 0.74 to 7.71 Degree, Insertion Loss 1.09 to 1.88 dBq, Current 30 mA. Tags: Surface Mount, Balanced to Balanced. More details for TCM2-43X+ can be seen below.