The TCM9-1+ from Mini Circuits is a Balun with Frequency 2 to 280 MHz, Insertion Loss 0.82 to 2.11 dB, Current 30 mA, Power 0.25 W, Return Loss 6.95 to 15.35 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for TCM9-1+ can be seen below.