The BAL-0416SMG from Marki Microwave is a Balun with Frequency 4 to 16 GHz, Impedance Ratio (Num) 1:2, Amplitude Balance 0.4 to 1 dB, Phase Balance 1 to 15 Degrees, Phase_Shift 180 Degrees. Tags: Surface Mount, Balanced to Unbalanced. More details for BAL-0416SMG can be seen below.