5. Select a Resistor to Drive an LED

• ✅ Resistance: 470Ω – matches calculated value for 22mA LED current from 12V supply (V_R = 12V - 2V = 10V; R = 10V / 0.022A ≈ 455Ω. 470Ω is the closest standard value and well within ±5% tolerance).
• ✅ Tolerance: ±5% – meets the requirement for current limiting accuracy (±5% or better).
• ✅ Power Rating: 0.333W (1/3W) – meets the minimum required rating (≥0.33W).
     Dissipation for this application: P = I²R = (0.022A)² × 470Ω ≈ 0.227W, so there is ample margin for reliability.
• ✅ Mounting Type: Surface Mount (0603 package) – suitable for modern PCB assembly.
• ✅ Technology: Thick Film – meets required specification (Thick Film or Thin Film).
• ✅ RoHS Compliance: Yes (ROHS3 Compliant).

All key specifications are met. This resistor is a reliable, safe, and appropriate choice for your 12V red LED indicator circuit.