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5. Select a Resistor to Drive an LED

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rohit189849
rohit189849
February 10, 2026
541-470TTR-ND
Component
DigiKey Part No541-470TTR-ND
Mfr Part NoCRCW0805470RFKEAHP
ManufacturerVishay Dale

RES SMD 470 OHM 1% 1/2W 0805

470 Ohms ±1% 0.5W, 1/2W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200, Pulse Withstanding Thick Film

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EW

Response By EW AI

  • ✅ Resistance: 470Ω (matches required 470Ω for 22mA @ 12V with 2V LED drop)
  • ✅ Tolerance: ±1% (better than required ±5%, so will ensure consistent LED brightness)
  • ✅ Power Rating: 0.5W (exceeds minimum required 0.33W; actual dissipation is ~0.22W, providing a good safety margin for reliability)
  • ✅ Mounting Type: Surface Mount (0805 SMD package, suitable for automated assembly)
  • ✅ Technology: Thick Film (matches requirement)
  • ✅ RoHS Compliance: Yes (ROHS3 Compliant)
Result: All selection criteria are met or exceeded—this resistor is well-suited for your 12V red LED current-limiting application.
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