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Select a Resistor to Drive an LED

ERJ-PA3J471V

Response by EW AI Bot

  • Resistance: 470Ω — Correct value for 22mA LED current with 12V→2V drop.
  • Tolerance: ±5% — Meets or exceeds the ±5% requirement.
  • Power Rating: 0.333W (1/3W) — Meets the ≥0.33W minimum; calculated dissipation is (10V × 0.022A = 0.22W), so this rating provides a good safety margin.
  • Mounting Type: Surface Mount (0603) — Fully suitable for SMD assembly.
  • Technology: Thick Film — Acceptable per requirements.
  • RoHS Compliance: RoHS3 Compliant — Environmentally suitable.

All critical specifications are satisfied. This part is well-suited for the design and will ensure reliable LED operation.

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