The JT-1975+ from Mini Circuits is a Balun with Frequency 0.04 to 80 MHz, Amplitude Balance ± 0 to 0.26 dB, Phase Balance 0.05 to 3.54 Degree, Insertion Loss 0.16 to 1.65 dB, Current 30 mA. Tags: Surface Mount, Unbalanced to Balanced. More details for JT-1975+ can be seen below.