The NGB0603CG2R450G050TRF from NIC Components is a Balun with Frequency 2350 to 2550 MHz, Amplitude Balance 2 dB, Phase Balance 180 ± 10 Degrees, Insertion Loss 1.2 to 1.3 dB, Power 500 mW. Tags: Surface Mount, Unbalanced to Balanced. More details for NGB0603CG2R450G050TRF can be seen below.