The ADT9-1T+ from Mini Circuits is a Balun with Frequency 1 to 250 MHz, Amplitude Balance ± 0 to 0.03 dB, Phase Balance 0.05 to 2.32 Degree, Insertion Loss 0.81 to 1.32 dB, Current 30 mA. Tags: Surface Mount, Unbalanced to Balanced. More details for ADT9-1T+ can be seen below.