5. Select a Resistor to Drive an LED

• ✅ Resistance: 470Ω (matches calculated requirement)
• ✅ Tolerance: ±1% (better than required ±5%)
• ✅ Power Rating: 2W (well above minimum 0.33W; ensures cool operation and long-term reliability)
• ✅ Mounting Type: Surface Mount (2512 package; suitable for SMD assembly)
• ✅ Technology: Thick Film (matches requirement)
• ✅ RoHS Compliance: ROHS3 Compliant (meets environmental requirements)

No mismatches found.

All critical requirements are met or exceeded. The selected resistor will safely limit current, fit on a PCB, and operate reliably in your 12V LED application.

Why these specs matter:

• ⚡ Power Rating: The resistor will dissipate ~0.22W (P = (10V x 22mA)), so a 2W rating ensures very low self-heating and excellent reliability margin.
• 🎯 Tolerance: Tight tolerance (±1%) ensures consistent LED brightness and current.
• 🔩 Mounting: SMD 2512 is robust and easy to assemble with standard SMT lines.