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Select a Resistor to Drive an LED

SowmiyaSV
SowmiyaSV
P470BZDKR-ND

Response by EW AI Bot

  • ✅ Correct Resistance: 470Ω matches the requirement for 22mA through a red LED (10V drop across resistor, I = V/R = 10V/470Ω ≈ 21.3mA).
  • ✅ Tolerance: ±5% meets the minimum requirement.
  • ✅ Power Rating: 0.333W (1/3W) meets the ≥0.33W requirement.
        Power dissipated will be P = I²R = (0.022A)² × 470Ω ≈ 0.228W, which is below the rating and provides a safe margin.
  • ✅ Mounting Type: Surface Mount (0603 size) is suitable for SMT assembly.
  • ✅ Technology: Thick Film, as specified.
  • ✅ RoHS Compliance: ROHS3 Compliant.
Conclusion: All critical specifications are met or exceeded. This resistor (ERJ-PA3J471V) is approved for use as an LED current limiting resistor in your 12V red LED design.
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