The T3-1+ from Mini Circuits is a Balun with Frequency 0.5 to 800 MHz, Insertion Loss 1.18 to 3.7 dB, Current 30 mA, Power 0.25 W, Return Loss 1.720 to 12.300 dB. Tags: Surface Mount, Unbalanced to Unbalanced. More details for T3-1+ can be seen below.