The ADT4-5WT+ from Mini Circuits is a Balun with Frequency 0.3 to 500 MHz, Amplitude Balance ± 0 to 0.79 dB, Phase Balance 0.07 to 20.54 Degree, Insertion Loss 0.33 to 1.40 dB, Current 30 mA. Tags: Surface Mount, Unbalanced to Balanced. More details for ADT4-5WT+ can be seen below.