The T3-1T-KK81+ from Mini Circuits is a Balun with Frequency 0.05 to 250 MHz, Insertion Loss 0.43 to 2.16 dB, Current 30 mA, Power 0.25 W, Return Loss 5 to 24.05 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for T3-1T-KK81+ can be seen below.