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5. Select a Resistor to Drive an LED

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UdhayaR
UdhayaR
November 1, 2025
13-Rc1210FR-07470RLTR-ND
Component
DigiKey Part No13-RC1210FR-07470RLTR-ND
Mfr Part NoRC1210FR-07470RL
ManufacturerYAGEO

RES 470 OHM 1% 1/2W 1210

470 Ohms ±1% 0.5W, 1/2W Chip Resistor 1210 (3225 Metric) Moisture Resistant Thick Film

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EW

Response By EW AI

  • ✅ Resistance: 470Ω (matches calculated requirement of 470Ω for 22mA LED current at 12V supply)
  • ✅ Tolerance: ±1% (better than required ±5%, ensuring even more precise current control)
  • ✅ Power Rating: 0.5W (exceeds minimum required 0.33W, and calculated actual dissipation is ~0.22W — well within safe limits)
  • ✅ Mounting Type: Surface Mount (1210 size is well-suited for PCB assembly)
  • ✅ Technology: Thick Film (matches requirement)
  • ✅ RoHS Compliance: Yes (ROHS3 Compliant)
Conclusion: All requirements are met or exceeded. This is a very suitable choice for your LED current limiting application.
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