The NCS1-63+ from Mini Circuits is a Balun with Frequency 4.9 to 6 GHz, Amplitude Balance ± 0.07 to 0.57 dB, Phase Balance 0.08 to 3.57 Degree, Insertion Loss 0.01 to 0.27 dB, Power 3 W. Tags: Ceramic, Unbalanced to Balanced. More details for NCS1-63+ can be seen below.