The 0402DC-3N1X_R_ from Coilcraft is a RF Inductor with Inductance 0.0031 uH, DC Resistance 0.037 Ohms, DC Current 1.1 to 2.1 A, Self Resonant Frequency 15.26 GHz, Operating Temperature -40 to 125 Degree C. Tags: Wire Wound Inductor, Ceramic Inductor, Chip Inductor. More details for 0402DC-3N1X_R_ can be seen below.