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5. Select a Resistor to Drive an LED

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PHP00603E4700BST1-ND
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 the required calculated value for 22mA current through a 2V LED on 12V supply.
  • Tolerance: ±0.1% — exceeds the minimum requirement of ±5%. This gives even more precise control of LED current.
  • Power Rating: 0.375W (3/8W) — meets/exceeds the required ≥0.33W rating. Calculated dissipation is (12V-2V) × 22mA ≈ 0.22W, so this resistor will run safely below its rated power.
  • Mounting Type: Surface Mount (0603 package) — suitable for modern PCB assembly.
  • Technology: Thin Film — meets the requirement for Thick Film or Thin Film.
  • RoHS Compliance: ROHS3 Compliant — suitable for lead-free/RoHS designs.

Summary: All critical specifications are met or exceeded. This resistor is well suited for your LED current-limiting application, ensuring reliable operation and long-term performance.

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