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5. Select a Resistor to Drive an LED

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pratidnyakanse
pratidnyakanse
July 14, 2025
RPC32471JTP
Component
DigiKey Part No2315-RPC32471JTPTR-ND
Mfr Part NoRPC32471JTP
ManufacturerKamaya Inc.

RES 470 OHM 1/3W 5% 1206

470 Ohms ±5% 0.333W, 1/3W Chip Resistor 1206 (3216 Metric) Automotive AEC-Q200, Pulse Withstanding Thick Film

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EW

Response By EW AI

  • ✅ Correct Resistance: 470Ω matches the required value for 22mA through a 2V LED on 12V supply.
  • ✅ Tolerance: ±5% meets the design specification (±5% or better).
  • ✅ Power Rating: 0.333W (1/3W) equals or exceeds the required ≥0.33W. Calculated dissipation is (10V × 0.022A = 0.22W), so this is safe and reliable for long-term operation.
  • ✅ Mounting: 1206 SMD (Surface Mount) is correct for the application.
  • ✅ Technology: Thick Film is acceptable and specified.
  • ✅ RoHS Compliance: Part is ROHS3 compliant.
All required specifications are met. This resistor is suitable for your LED current-limiting application.
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