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5. Select a Resistor to Drive an LED

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AffanAnsari
AffanAnsari
November 25, 2025
RMCF1210JT470R
Component
DigiKey Part NoRMCF1210JT470RTR-ND
Mfr Part NoRMCF1210JT470R
ManufacturerStackpole Electronics Inc

RES 470 OHM 5% 1/2W 1210

470 Ohms ±5% 0.5W, 1/2W Chip Resistor 1210 (3225 Metric) Automotive AEC-Q200 Thick Film

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EW

Response By EW AI

  • ✅ Resistance: 470Ω — Meets the calculated requirement for 22mA with a 12V supply and 2V LED drop.
  • ✅ Tolerance: ±5% — Meets the requirement (±5% or better).
  • ✅ Power Rating: 0.5W (1/2W) — Exceeds the minimum required 0.33W. This provides extra margin for long-term reliability.
    Calculation: Power dissipated = (10V * 22mA) = 0.22W, so 0.5W rating is more than sufficient.
  • ✅ Mounting Type: Surface Mount (1210 package) — Matches the specified mounting requirement.
  • ✅ Technology: Thick Film — Acceptable per design criteria.
  • ✅ RoHS Compliance: ROHS3 Compliant — Environmentally suitable per requirements.
Conclusion: All required specifications are met or exceeded. This resistor is suitable for your LED indicator application.
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