The TCM3-1T+ from Mini Circuits is a Balun with Frequency 2 to 500 MHz, Insertion Loss 0.54 to 0.99 dB, Current 30 mA, Power 0.25 W, Return Loss 16.34 to 26.93 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for TCM3-1T+ can be seen below.