The RBL-1608-A3-TR from Raltron is a Balun with Frequency 2.4 to 2.5 GHz, Amplitude Balance ±2 dB, Phase Balance ±10 Degree, Phase_Shift 180 Degree, Insertion Loss 1 dB. Tags: Surface Mount, Unbalanced to Balanced. More details for RBL-1608-A3-TR can be seen below.