The 0402FL-421XJR_ from Coilcraft is a RF Inductor with Inductance 0.42 uH, DC Resistance 0.57 Ohms, DC Current 190 to 360 mA, Self Resonant Frequency 800 MHz, Operating Temperature -40 to 125 Degree C. Tags: Chip Inductor, Wire Wound Inductor. More details for 0402FL-421XJR_ can be seen below.