The TC4-1W-7A+ from Mini Circuits is a Balun with Frequency 125 to 135 MHz, Insertion Loss 0.36 to 0.40 dB, Current 30 mA, Power 0.25 W, Return Loss 24.12 to 28.39 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for TC4-1W-7A+ can be seen below.