220 Ohm Resistor (1/4 Watt, 5% Tolerance)
₵0.50
The 220 Ohm resistor is a common and essential component in electronics, especially for protecting LEDs by limiting current flow to safe levels. This standard 1/4 Watt “through-hole” resistor is the perfect size for solderless breadboards and works well with Arduino and ESP32 projects, providing ideal resistance for microcontroller pin interfacing.
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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.
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