The 0603DC-4N3X_RW from Coilcraft is a RF Inductor with Inductance 0.0043 uH, DC Resistance 0.04 Ohms, DC Current 1.39 to 2.8 A, Self Resonant Frequency 10.6 GHz, Quality Factor 100, 138, 167. Tags: Wire Wound Inductor, Ceramic Inductor, Chip Inductor. More details for 0603DC-4N3X_RW can be seen below.