LED series resistor
Series resistor from supply, forward voltage and current, with the standard value and its dissipation.
Typical Vf:
Calculated300 Ω
Standard (next up)300 ΩActual current 10 mA
Resistor power30 mW
R = (Vs − n·Vf) / I
Results are for design reference only. Check the datasheet and measure.