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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 the calculated requirement for setting 22mA with 12V supply and 2V LED forward voltage.
  • Tolerance: ±5% meets the requirement (±5% or better).
  • Power Rating: 0.333W (1/3W) exactly meets the minimum required rating (≥0.33W).
    Calculation: Power dissipated = (12V - 2V) × 22mA = 0.22W, so this rating is suitable and leaves a safe margin.
  • Mounting Type: 0603 SMD is a standard surface-mount package.
  • Technology: Thick Film (as required).
  • RoHS Compliance: RoHS3 Compliant.

All required specifications are met. This is a suitable and reliable choice for your design.

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