The TC4-1W-7ALN+ from Mini Circuits is a Balun with Frequency 5 to 500 MHz, Insertion Loss 0.31 to 1.62 dB, Current 150 mA, Power 0.25 W, Return Loss 9.57 to 35.27 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for TC4-1W-7ALN+ can be seen below.