The T13-1T+ from Mini Circuits is a Balun with Frequency 0.3 to 120 MHz, Insertion Loss 0.88 to 2.15 dB, Current 30 mA, Power 0.25 W, Return Loss 5.82 to 15.23 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for T13-1T+ can be seen below.