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5. Select a Resistor to Drive an LED

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GabrielleGarcia
GabrielleGarcia
December 21, 2025
13-RC1206FR-7W470RLTR-ND
Component
DigiKey Part No13-RC1206FR-7W470RLTR-ND
Mfr Part NoRC1206FR-7W470RL
ManufacturerYAGEO

RES 470 OHM 1% 1/2W 1206

470 Ohms ±1% 0.5W, 1/2W Chip Resistor 1206 (3216 Metric) Moisture Resistant Thick Film

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EW

Response By EW AI

  • ✅ Resistance: 470Ω is exactly as calculated for the desired current (470Ω = (12V-2V)/22mA).
  • ✅ Tolerance: 1% (better than required ±5%).
  • ✅ Power Rating: 0.5W (> 0.33W minimum required).
    Power dissipated = (22mA)2 x 470Ω ≈ 0.23W, so 0.5W provides ample margin.
  • ✅ Mounting Type: 1206 size surface-mount chip resistor meets the surface-mount requirement.
  • ✅ Technology: Thick Film is accepted as per requirements.
  • ✅ RoHS Compliance: Marked as "ROHS3 Compliant".
All requirements are satisfied. This resistor is well-suited for your LED current limiting application and provides a comfortable safety margin for long-term reliability.
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