5. Select a Resistor to Drive an LED

Resistor Selection Review

• ✅ Resistance: 470Ω — Matches calculated value for 12V to 2V drop at 22mA
• ✅ Tolerance: 1% — Better than required ±5%
• ✅ Power Rating: 0.5W — Exceeds minimum 0.33W (actual dissipation ≈ 0.22W)
• ✅ Mounting Type: Surface Mount (1210 package)
• ✅ Technology: Thick Film
• ✅ RoHS Compliance: ROHS3 Compliant

Conclusion: All specifications meet or exceed requirements. This part is well-suited for safely and reliably limiting current to a red LED in your 12V application.