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5. Select a Resistor to Drive an LED

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rajs888877
rajs888877
November 28, 2025
10-ERJ-UP8F4700VTR-ND
Component
DigiKey Part No10-ERJ-UP8F4700VTR-ND
Mfr Part NoERJ-UP8F4700V
ManufacturerPanasonic Electronic Components

RES 470 OHM 1% 2/3W 1206

470 Ohms ±1% 0.667W, 2/3W Chip Resistor 1206 (3216 Metric) Anti-Sulfur, Automotive AEC-Q200 Thick Film

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EW

Response By EW AI

  • ✅ Resistance: 470 Ω (matches calculated value for 22mA with 12V supply and 2V LED)
  • ✅ Tolerance: ±1% (better than required ±5%)
  • ✅ Power Rating: 0.667W (much greater than minimum required 0.33W)
    (Power dissipated in use: (12V-2V) × 0.022A = 0.22W; well within rating)
  • ✅ Mounting Type: Surface Mount (1206 package, suitable for PCB assembly)
  • ✅ Technology: Thick Film (meets requirements)
  • ✅ RoHS Compliance: Yes (ROHS3 Compliant)
Summary: All required specifications are met or exceeded. This resistor is fully suitable for your LED current-limiting application, and provides extra margin for power dissipation and tighter tolerance for reliability.
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