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5. Select a Resistor to Drive an LED

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KavipriyaK
KavipriyaK
November 1, 2025
RMCF1210JT470RCT-ND
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 matches the calculated value for 12V - 2V / 22mA (≈454.5Ω, next standard value is 470Ω).
  • ✅ Tolerance: ±5% meets the requirement (±5% or better).
  • ✅ Power Rating: 0.5W (1/2W) exceeds the minimum requirement of 0.33W.
    Power dissipated = (10V × 22mA) = 0.22W, so 0.5W is a safe margin.
  • ✅ Mounting Type: Surface Mount (1210 package), as required.
  • ✅ Technology: Thick Film, meets requirements.
  • ✅ RoHS Compliance: ROHS3 Compliant.
All specified requirements are met. This resistor is fully suitable for your 12V red LED application.
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