The TC4-14+ from Mini Circuits is a Balun with Frequency 200 MHz to 1.4 GHz, Insertion Loss 0.70 to 2.77, Current 30 mA, Power 0.25 W, Return Loss 5.05 to 21.93 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for TC4-14+ can be seen below.