The ADTL1-12+ from Mini Circuits is a Balun with Frequency 20 MHz to 1.2 GHz, Amplitude Balance ± 0.04 to 0.99 dB, Phase Balance 0.30 to 3.48 Degree, Insertion Loss 0.28 to 1.32 dB, Current 30 mA. Tags: Surface Mount, Balanced to Balanced. More details for ADTL1-12+ can be seen below.