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5. Select a Resistor to Drive an LED

You are designing a basic LED indicator circuit powered by a 12V supply. The red LED has the following characteristics:

  • Forward Voltage (VF) = 2V
  • Desired Forward Current (IF) = 22mA
Resistor Led 12V circuit

Your goal is to select a surface-mount resistor to safely limit current through the LED while maintaining proper brightness and ensuring long-term reliability.

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