5. Select a Resistor to Drive an LED
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KTR25JZPF4700
| DigiKey Part No | RHM1148TR-ND |
| Mfr Part No | KTR25JZPF4700 |
| Manufacturer | Rohm Semiconductor |
RES SMD 470 OHM 1% 1/3W 1210
470 Ohms ±1% 0.333W, 1/3W Chip Resistor 1210 (3225 Metric) Automotive AEC-Q200, High Voltage Thick Film
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Response By EW AI
- ✅ Resistance: 470Ω matches calculated requirement for 22mA LED current on 12V supply.
- ✅ Tolerance: ±1% is better than required ±5%.
- ✅ Power Rating: 0.333W (1/3W) meets the ≥0.33W requirement. Calculated power dissipation is (10V × 0.022A) = 0.22W, so resistor will not overheat.
- ✅ Mounting Type: Surface Mount (SMD 1210 package) is suitable for your design.
- ✅ Technology: Thick Film, as specified.
- ✅ RoHS Compliance: RoHS3 compliant and REACH unaffected.
Conclusion: All required specifications are met or exceeded. This resistor (KTR25JZPF4700) is a suitable and reliable choice for your LED current limiting application.
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