The TC4-6T+ from Mini Circuits is a Balun with Frequency 1.5 to 600 MHz, Insertion Loss 0.65 to 1.84 dB, Current 30 mA, Power 0.25 W, Return Loss 9.91 to 34.11 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for TC4-6T+ can be seen below.