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5. Select a Resistor to Drive an LED

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ERJ-PA3J471V
Component
DigiKey Part NoP470BZTR-ND
Mfr Part NoERJ-PA3J471V
ManufacturerPanasonic Electronic Components

RES SMD 470 OHM 5% 1/3W 0603

470 Ohms ±5% 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: 470Ω — matches calculated requirement for 22mA with 12V and 2V LED drop.
  • Tolerance: ±5% — meets specification (±5% or better).
  • Power Rating: 0.333W (1/3W) — meets or exceeds required ≥0.33W.
    (Actual dissipation is ~0.22W: (10V × 22mA). Good margin for reliability.)
  • Mounting Type: Surface Mount (0603 package) — suitable for SMD assembly.
  • Technology: Thick Film — acceptable per requirements.
  • RoHS Compliance: Yes — "RoHS3 Compliant".

All key specs are met. This part is suitable and recommended for your LED current limiting application.

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