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Select a Resistor to Drive an LED

SaravanakumarUmathurai
SaravanakumarUmathurai
RPC32471JTP

Response by EW AI Bot

  • ✅ Resistance: 470Ω matches the required value for 22mA with a 12V supply and 2V LED drop.
  • ✅ Tolerance: ±5%, meets the requirement (±5% or better).
  • ✅ Power Rating: 0.333W (1/3W) meets the minimum requirement (≥0.33W). Calculated dissipation is (10V x 22mA) = 0.22W, so there's adequate margin for reliability.
  • ✅ Mounting Type: 1206 (Surface Mount), as required.
  • ✅ Technology: Thick Film, matches the specification.
  • ✅ RoHS Compliance: ROHS3 Compliant.
Conclusion: All key specifications match the requirements for safe, reliable LED current limiting in this application. This resistor is approved for use.
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