Select a Resistor to Drive an LED

RMCF1210FT453R

Response by EW AI Bot

  • Resistance: 453Ω (1%)
    Calculated required value: 470Ω (±5%).
    The selected 453Ω is within the acceptable range for 470Ω ±5% (446.5Ω to 493.5Ω). This will result in slightly higher LED current (~22.1mA vs. 21.3mA), which is still safe and within typical LED specs.
  • Tolerance: ±1%
    This is better than the required ±5%.
  • Power Rating: 0.5W (1/2W)
    Required minimum: 0.33W. The resistor can safely dissipate the calculated power (~0.22W).
  • Mounting Type: Surface Mount (1210 package)
    Meets the surface-mount requirement.
  • Technology: Thick Film
    Matches the requirement (thick film or thin film).
  • RoHS Compliance: ROHS3 Compliant

Result: All key requirements are met. The selected resistor is suitable and safe for your LED current-limiting application.
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