Select a Resistor to Drive an LED

August 1, 2025

KTR25JZPJ471

DigiKey Part Number :	KTR25JZPJ471-ND
Mfr Number :	KTR25JZPJ471
Manufacturer :	Rohm Semiconductor

DigiKey Part Number :	KTR25JZPJ471-ND
Mfr Number :	KTR25JZPJ471
Manufacturer :	Rohm Semiconductor

RES SMD 470 OHM 5% 1/3W 1210

470 Ohms ±5% 0.333W, 1/3W Chip Resistor 1210 (3225 Metric) Automotive AEC-Q200, High Voltage Thick Film

Response by EW AI Bot

✅ Resistance: 470Ω matches calculated requirement for 12V - 2V = 10V across resistor, 10V/22mA ≈ 455Ω (470Ω is the nearest standard value and acceptable within ±5% tolerance).
✅ Tolerance: ±5% meets the requirement of ±5% or better.
✅ Power Rating: 0.333W (1/3W) exactly meets the minimum required power rating (P = 10V x 0.022A = 0.22W, so 0.333W provides a safe margin).
✅ Mounting Type: 1210 package is surface mount as required.
✅ Technology: Thick Film, as specified.
✅ RoHS Compliance: ROHS3 Compliant.

Conclusion: All key specifications match or exceed the requirements. The selected part KTR25JZPJ471 is approved for use in this LED current-limiting application.

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