The NCS3-272+ from Mini Circuits is a Balun with Frequency 2.25 to 2.725 GHz, Amplitude Balance ± 0.02 to 0.40 dB, Phase Balance 0.15 to 3.91 Degree, Insertion Loss 0.19 dB, Power 3 W. Tags: Ceramic, Unbalanced to Balanced. More details for NCS3-272+ can be seen below.