5. Select a Resistor to Drive an LED
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RC1206JR-7W470RL
| DigiKey Part No | 13-RC1206JR-7W470RLTR-ND |
| Mfr Part No | RC1206JR-7W470RL |
| Manufacturer | YAGEO |
RES 470 OHM 5% 1/2W 1206
470 Ohms ±5% 0.5W, 1/2W Chip Resistor 1206 (3216 Metric) Moisture Resistant Thick Film
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- ✅ Resistance: 470Ω – Matches calculated requirement for 22mA LED current (R = (12V-2V)/22mA ≈ 455Ω, rounded to standard 470Ω).
- ✅ Tolerance: ±5% – Meets requirement for ±5% or better, ensuring current remains within safe/bright range.
- ✅ Power Rating: 0.5W – Exceeds minimum required (0.33W). Power dissipated is P = (10V)^2/470Ω ≈ 0.213W, so 0.5W provides ample safety margin for long-term reliability.
- ✅ Mounting Type: 1206 Surface Mount – Fully suitable for SMT assembly as required.
- ✅ Technology: Thick Film – Acceptable for general-purpose LED current limiting.
- ✅ RoHS Compliance: ROHS3 Compliant – Meets environmental requirements.
✅ This resistor is fully suitable for the application and meets or exceeds all requirements.
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