The TCM4-14+ from Mini Circuits is a Balun with Frequency 200 MHz to 1.4 GHz, Insertion Loss 0.67 to 1.35 dB, Current 30 mA, Power 0.25 W, Return Loss 5.52 to 18.47 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for TCM4-14+ can be seen below.