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5. Select a Resistor to Drive an LED

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HseyinKaba
HseyinKaba
February 6, 2026
846-ESR03EZPF4530CT-ND
Component
DigiKey Part No846-ESR03EZPF4530TR-ND
Mfr Part NoESR03EZPF4530
ManufacturerRohm Semiconductor

RES 453 OHM 1% 1/3W 0603

453 Ohms ±1% 0.333W, 1/3W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200, Pulse Withstanding Thick Film

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EW

Response By EW AI

  • ✅ Resistance: 453Ω is very close to the calculated 470Ω. This will result in a slightly higher LED current (~22.1 mA vs. 21.3 mA at 470Ω), which is safe and within typical LED specs.
  • ✅ Tolerance: 1% (better than required ±5%).
  • ✅ Power Rating: 0.333W (meets the ≥0.33W requirement). Calculated dissipation is (22mA)^2 × 453Ω ≈ 0.22W, well below the resistor’s limit.
  • ✅ Mounting Type: Surface Mount (0603 package), as required.
  • ✅ Technology: Thick Film, as specified.
  • ✅ RoHS Compliance: ROHS3 Compliant.
All critical specs are met or exceeded. This resistor is suitable and recommended for your 12V red LED circuit.
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