The NCS2-222+ from Mini Circuits is a Balun with Frequency 1.275 to 2.2 GHz, Amplitude Balance ± 0 to 0.20 dB, Phase Balance 0.59 to 3.30 Degree, Insertion Loss 0.33 dB, Power 3 W. Tags: Ceramic, Unbalanced to Balanced. More details for NCS2-222+ can be seen below.