The NCS1-23+ from Mini Circuits is a Balun with Frequency 1.3 to 2 GHz, Amplitude Balance ± 0.17 to 0.38 dB, Phase Balance 0.15 to 1.99 Degree, Insertion Loss 0.30 dB, Power 3 W. Tags: Ceramic, Unbalanced to Balanced. More details for NCS1-23+ can be seen below.