5. Select a Resistor to Drive an LED

• ✅ Resistance: 470Ω matches the calculated requirement for 12V - 2V / 22mA = 455Ω (rounded to standard value 470Ω).
• ✅ Tolerance: 1% is better than required ±5%.
• ✅ Power Rating: 0.5W (1/2W) exceeds the minimum 0.33W requirement. Calculated dissipation is (10V × 22mA) = 0.22W, well within rating.
• ✅ Mounting Type: 1206 SMD format is surface-mount and suitable for PCB assembly.
• ✅ Technology: Thick Film, as required.
• ✅ RoHS Compliance: ROHS3 Compliant (per DigiKey attributes).

Summary: All critical specifications are met or exceeded. The selected resistor (Stackpole RPC1206FT470R-HP) is APPROVED for your 12V red LED current limiting application.