5. Select a Resistor to Drive an LED

• ✅ Resistance: 470Ω matches the calculated requirement for a 12V to 2V drop at 22mA (R = (12V-2V)/0.022A ≈ 455Ω; 470Ω is the nearest standard value and well within spec).
• ✅ Tolerance: ±5% meets the requirement of ±5% or better.
• ✅ Power Rating: 0.5W (1/2W) exceeds the minimum required 0.33W. Calculated maximum dissipation is (V_R × I) = (10V × 0.022A) = 0.22W, so 0.5W is more than adequate for long-term reliability.
• ✅ Mounting Type: 1206 package is a standard surface-mount format, suitable for PCB assembly.
• ✅ Technology: Thick Film, as specified.
• ✅ RoHS Compliance: Marked as ROHS3 Compliant.

Conclusion: All specifications are met or exceeded. The selected resistor (YAGEO RC1206JR-7W470RL) is a safe, reliable, and compliant choice for your LED current limiting application.