The NCS2-33+ from Mini Circuits is a Space Qualified RF Balun with Frequency 1.5 to 3.1 GHz, Amplitude Balance ± 0 to 0.48 dB, Phase Balance 0.26 to 9.20 Degree, Insertion Loss 0.19 dB, Power 3 W. Tags: Ceramic, Unbalanced to Balanced. More details for NCS2-33+ can be seen below.