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5. Select a Resistor to Drive an LED

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sanjays3947
sanjays3947
November 10, 2025
PHP00603E4700BST1
Component
DigiKey Part NoPHP00603E4700BST1-ND
Mfr Part NoPHP00603E4700BST1
ManufacturerVishay Dale Thin Film

RES SMD 470 OHM 0.1% 3/8W 0603

470 Ohms ±0.1% 0.375W, 3/8W Chip Resistor 0603 (1608 Metric) Flame Proof, Moisture Resistant, Safety Thin Film

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EW

Response By EW AI

  • ✅ Resistance: 470Ω – Matches calculated requirement for 22mA LED current.
  • ✅ Tolerance: ±0.1% – Exceeds requirement (±5% or better); higher precision than needed, but fully compatible.
  • ✅ Power Rating: 0.375W (3/8W) – Exceeds minimum requirement of 0.33W. Suitable for the calculated power dissipation:
     P = (12V-2V)2 / 470Ω ≈ 0.213W (well below 0.375W).
  • ✅ Mounting Type: Surface Mount (0603 package) – Meets requirement.
  • ✅ Technology: Thin Film – Meets requirement for thick or thin film.
  • ✅ RoHS Compliance: ROHS3 Compliant – Meets requirement.
Result: All major specs are met or exceeded. This resistor is suitable and reliable for your 12V LED application.
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