The 0302CS-21NXJR_ from Coilcraft is a RF Inductor with Inductance 0.021 uH, DC Resistance 0.37 Ohms, DC Current 370 mA, Self Resonant Frequency 5.16 GHz, Operating Temperature -40 to 125 Degree C. Tags: Ceramic Inductor, Chip Inductor. More details for 0302CS-21NXJR_ can be seen below.