5. Select a Resistor to Drive an LED

• ✅ Resistance: 453Ω (1%)
  Calculated required value: 470Ω (±5%).
  The selected 453Ω is within the acceptable range for 470Ω ±5% (446.5Ω to 493.5Ω). This will result in slightly higher LED current (~22.1mA vs. 21.3mA), which is still safe and within typical LED specs.
• ✅ Tolerance: ±1%
  This is better than the required ±5%.
• ✅ Power Rating: 0.5W (1/2W)
  Required minimum: 0.33W. The resistor can safely dissipate the calculated power (~0.22W).
• ✅ Mounting Type: Surface Mount (1210 package)
  Meets the surface-mount requirement.
• ✅ Technology: Thick Film
  Matches the requirement (thick film or thin film).
• ✅ RoHS Compliance: ROHS3 Compliant

Result: All key requirements are met. The selected resistor is suitable and safe for your LED current-limiting application.