5. Select a Resistor to Drive an LED

• ✅ Resistance: 470Ω – matches the calculated value for 22mA current (470Ω = (12V-2V)/22mA).
• ✅ Tolerance: ±1% – exceeds the requirement of ±5% or better, allowing for tighter control of LED current.
• ✅ Power Rating: 0.5W (1/2W) – comfortably exceeds the minimum required (≥0.33W). Calculated dissipation is 0.22W, so 0.5W provides a strong safety margin.
• ✅ Mounting Type: Surface Mount (1206 size) – matches requirement for SMD assembly.
• ✅ Technology: Thick Film – matches allowed types (Thick Film or Thin Film).
• ✅ RoHS Compliance: RoHS3 Compliant – meets environmental requirements.

Summary: All required specifications are met or exceeded. This is a suitable and reliable choice for your LED current limiting application.