5mm Green LED Diffused High Brightness Indicator Light

5mm Green LED – Diffused High Brightness Indicator Light

The 5mm Green Diffused LED is a standard through-hole indicator light with a wide viewing angle and uniform light diffusion. Its bright green emission makes it ideal for status indicators, power-on signals, and visual feedback in electronics projects and enclosures.

Key Specifications

• Color: Green
• Lens Type: Diffused (wide viewing angle ~60°)
• Diameter: 5mm
• Forward Voltage (V₀): ~2.0–2.2V
• Forward Current (I₀): 20mA (max)
• Luminous Intensity: High brightness
• Wavelength: ~520–530 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 status indicator lights in enclosures
• GPIO output visual feedback in Arduino/ESP32 projects
• Traffic light and signal simulation circuits
• IoT device activity and connectivity 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.

Frequently Asked Questions

Which leg is positive?
The longer leg is the anode (+) and connects towards your GPIO pin or supply through the resistor. The shorter leg with the flat edge on the LED rim is the cathode (−) and goes to ground.

What resistor do I need with Arduino?
For a 5V Arduino, a 220Ω resistor gives safe, bright operation. On 3.3V boards like ESP32, 68–100Ω works well. Our 220Ω resistors are the perfect match for a first project.

What does diffused mean?
The lens scatters the light into a soft, even glow visible from a wide angle, unlike clear LEDs that throw a narrow beam. Diffused is the better choice for status indicators.

Can I connect it directly to a GPIO pin without a resistor?
No. An LED without a current-limiting resistor draws too much current and can burn out the LED or damage the pin. Always add the series resistor.

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