The T36-1-KK81+ from Mini Circuits is a Balun with Frequency 0.03 to 20 MHz, Insertion Loss 0.38 to 2.58 dB, Current 30 mA, Power 0.25 W, Return Loss 1.81 to 24.87 dB. Tags: Surface Mount, Balanced to Balanced. More details for T36-1-KK81+ can be seen below.