The T2-613-1-KK81+ from Mini Circuits is a Balun with Frequency 0.07 to 200 MHz, Insertion Loss 0.42 to 1.48 dB, Current 30 mA, Power 0.25 W, Return Loss 8.88 to 27.19 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for T2-613-1-KK81+ can be seen below.