5. Select a Resistor to Drive an LED

• ✅ Resistance: 470Ω matches the calculated value for 12V supply, 2V LED drop, and 22mA current: (12V-2V)/22mA ≈ 455Ω (470Ω is standard and suitable).
• ✅ Tolerance: ±5% matches the required specification (±5% or better).
• ✅ Power Rating: 0.5W (1/2W) exceeds the minimum required (≥0.33W). Actual dissipation is (10V × 22mA) = 0.22W, well below the resistor's max rating, ensuring long-term reliability.
• ✅ Mounting Type: Surface mount (1206 package) is suitable for SMT assembly.
• ✅ Technology: Thick Film, as specified.
• ✅ RoHS Compliance: ROHS3 Compliant.

Conclusion: All required specifications are met or exceeded. The selected resistor (Yageo RC1206JR-7W470RL) is well-suited for the application.