The TTCM4-4+ from Mini Circuits is a Balun with Frequency 0.5 to 400 MHz, Amplitude Balance ± 0.01 to 0.61 dB, Phase Balance 0.04 to 4.56 dB, Insertion Loss 0.82 to 1.90 dB, Current 30 mA. Tags: Surface Mount, Unbalanced to Balanced. More details for TTCM4-4+ can be seen below.