5. Select a Resistor to Drive an LED
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RMCF1210JT470RCT-ND
| DigiKey Part No | RMCF1210JT470RTR-ND |
| Mfr Part No | RMCF1210JT470R |
| Manufacturer | Stackpole Electronics Inc |
RES 470 OHM 5% 1/2W 1210
470 Ohms ±5% 0.5W, 1/2W Chip Resistor 1210 (3225 Metric) Automotive AEC-Q200 Thick Film
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- ✅ Resistance: 470Ω ±5% — matches calculated requirement for 22mA, 2V LED at 12V supply.
- ✅ Tolerance: ±5% — meets requirement (±5% or better).
- ✅ Power Rating: 0.5W > 0.33W minimum — resistor will safely dissipate the expected power:
Max Dissipation = (12V-2V)2/470Ω ≈ 0.21W (well below 0.5W). - ✅ Mounting Type: Surface Mount (1210) — fully suitable.
- ✅ Technology: Thick Film — meets requirement.
- ✅ RoHS Compliance: ROHS3 compliant.
Result: All required specifications are satisfied. This resistor is approved for the application.
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