220 Ohm Resistor (1/4 Watt, 5% Tolerance)

Key Features

• Resistance: 220 Ohms ($\Omega$)
• Primary Use: Safely limiting current for most standard LEDs (red, green, blue, etc.) when connected to 5V or 3.3V logic.
• Power Rating: 1/4 Watt (0.25W), the standard for breadboarding and low-power circuits.
• Tolerance: $\pm$5% (this is what the gold band at the end means).

Color Code

You can identify this resistor by its four colored bands:

• Red (2)
• Red (2)
• Brown (x10)
• Gold ($\pm$5%)

Reading: (2) (2) x 10 = 220 Ohms.