5mm Red LED Diffused High Brightness Indicator Light

5mm Red LED – Diffused High Brightness Indicator Light

The 5mm Red Diffused LED is the most universally recognised indicator light in electronics. With a wide diffused viewing angle and high brightness, it is the standard choice for power indicators, alarm signals, and error status lights in DIY and professional electronics builds.

Key Specifications

• Color: Red
• Lens Type: Diffused (wide viewing angle ~60°)
• Diameter: 5mm
• Forward Voltage (V₀): ~1.8–2.0V
• Forward Current (I₀): 20mA (max)
• Luminous Intensity: High brightness
• Wavelength: ~620–630 nm
• Mounting: Through Hole, 2-pin

Compatibility & Use Cases

Directly compatible with Arduino, ESP32, NodeMCU, and Raspberry Pi GPIO pins when used with a current-limiting resistor (220Ω for 5V, 68Ω for 3.3V). Common applications include:

• Power-on and error indicator lights in enclosures
• Alarm and alert signal circuits
• Traffic light and signal simulation projects
• IoT device fault and connectivity status indicators
• STEM and beginner electronics project builds

Always use a series resistor to limit current and protect both the LED and your microcontroller GPIO pin.

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