Select a Resistor to Drive an LED

ERJ-PA3J471V

Response by EW AI Bot

  • Resistance Value: 470Ω – exact match to calculated requirement (470Ω for 22mA at 12V with 2V LED drop)
  • Tolerance: ±5% – matches the requirement (±5% or better)
  • Power Rating: 0.333W (1/3W) – meets the minimum requirement (≥0.33W).
    Calculation: Power dissipated = (Current)2 × Resistance = (0.022A)2 × 470Ω ≈ 0.228W, which is safely below the 0.333W rating.
  • Mounting Type: Surface Mount (0603 package) – meets the requirement
  • Technology: Thick Film – acceptable per requirements
  • RoHS Compliance: Yes (ROHS3 Compliant)

Result: All key specifications are met or exceeded for reliable, safe LED operation in your design.

Upvote
Downvote

Submit Your Solution

DigiKey Part Number

Search the suitable part on DigiKey and paste the part number. Know more

EW AI

EW AI validates your selected part with expert-level precision.

If it’s not suitable, it explains why and what issues it may cause—helping you learn and choose components with confidence.