5. Select a Resistor to Drive an LED
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PCR1206-470RJ1
| DigiKey Part No | 696-PCR1206-470RJ1TR-ND |
| Mfr Part No | PCR1206-470RJ1 |
| Manufacturer | Riedon products by Bourns |
RES SMD 470 OHM 5% 1/3W 1206
470 Ohms ±5% 0.333W, 1/3W Chip Resistor 1206 (3216 Metric) Pulse Withstanding Thick Film
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- ✅ Resistance: 470Ω matches the calculated value (470Ω for 22mA with 12V-2V across resistor).
- ✅ Tolerance: ±5% meets or exceeds requirement (±5% or better).
- ✅ Power Rating: 0.333W (1/3W) meets the minimum required (≥0.33W). Calculated dissipation is (12V-2V)×0.022A = 0.22W, leaving adequate margin for reliability.
- ✅ Mounting Type: Surface Mount (1206 package) is suitable for the design requirement.
- ✅ Technology: Thick Film type, as specified.
- ✅ RoHS Compliance: ROHS3 Compliant per DigiKey listing.
All required specifications are satisfied for safe, reliable LED operation in this application.
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