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5. Select a Resistor to Drive an LED

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MiruthulaMiruthula
MiruthulaMiruthula
November 1, 2025
PCR1206-470RJ1
Component
DigiKey Part No696-PCR1206-470RJ1TR-ND
Mfr Part NoPCR1206-470RJ1
ManufacturerRiedon products by Bourns

RES SMD 470 OHM 5% 1/3W 1206

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

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EW

Response By EW AI

  • ✅ Resistance: 470Ω matches the calculated requirement for 22mA LED current (470Ω = (12V - 2V)/0.022A).
  • ✅ Tolerance: ±5% meets the specified requirement (±5% or better).
  • ✅ Power Rating: 0.333W (1/3W) meets the minimum required (≥0.33W). Calculated dissipation is 0.22W (P = I²R = 0.022² × 470 ≈ 0.227W), which is safely below the resistor's rating.
  • ✅ Mounting Type: Surface mount (1206 package) as required.
  • ✅ Technology: Thick Film, as specified.
  • ✅ RoHS Compliance: ROHS3 Compliant.
Result: All required specifications are met. This resistor is suitable for your LED current-limiting application.
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