The TCM2-1T+ from Mini Circuits is a Balun with Frequency 3 to 300 MHz, Insertion Loss 0.37 to 0.74 dB, Current 30 mA, Power 0.25 W, Return Loss 16.1 to 30.87 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for TCM2-1T+ can be seen below.