10PCS 5mm RGB Diffused LED Diodes – Common Cathode 4-Pin

10-Pack 5mm RGB Diffused LED Diodes – Tri-Color, Common Cathode, 4-Pin

Upgrade your DIY electronics and decorative lighting projects with these HVIERO 5mm Diffused RGB LEDs. Each pack contains 10 ultra-bright, tri-color (Red, Green, Blue) LEDs featuring a 4-pin common cathode design — perfect for makers, hobbyists, students, and professionals who need reliable, vivid color output in a compact form factor.

With a diffused lens for smooth, even color mixing and a 100,000-hour life rating, these LEDs are ideal for everything from Arduino breadboard projects to billboard displays, ambient lighting setups, and festive decorations.

Made in Mainland China.

Key Features

• Tri-Color RGB Output: Combines Red, Green, and Blue in a single 5mm package for rich, dynamic color effects.
• Diffused Lens: Provides a wide viewing angle with soft, ambient illumination and smooth color blending.
• Common Cathode Design: Easy to wire with microcontrollers like Arduino, Raspberry Pi, and other DIY platforms.
• Energy Efficient: Low 3V operating voltage and 20mA current draw reduce power consumption by up to 40%.
• Long Lifespan: Rated for 100,000 hours of continuous use.
• Compact Size: 5mm form factor fits standard breadboards and tight circuit spaces.
• Instant On: No warm-up time — full brightness immediately upon power.
• Wide Operating Temperature: Performs reliably from -25°C to +85°C.

Specifications

Applications

• Arduino, Raspberry Pi & microcontroller projects
• Breadboard prototyping & DIY electronics
• LED displays & signage
• Billboard & advertising lighting
• Christmas tree & festive decoration lights
• Landscape & ambient atmosphere lighting
• Science fair and school electronics projects

Usage Tips

• Use proper soldering technique at the correct temperature to avoid component damage.
• Pair with an RGB LED controller or PWM-capable microcontroller for full color mixing control.
• Install in a well-ventilated area to maximize lifespan.
• Always use a current-limiting resistor appropriate for your circuit voltage.

Package Includes

10 × 5mm 4-Pin Diffused RGB LED Diodes (Common Cathode)

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• 0–300mm PCB Holder Stand | 360° Rotation Soldering Clamp

For more information on LED technology and energy-efficient lighting standards, visit the U.S. Department of Energy – LED Lighting.

Learn more: Light-emitting diode

Frequently Asked Questions

Q: What is the difference between common cathode and common anode RGB LEDs?

A: In a common cathode RGB LED, all three color cathodes (negative leads) share a single common ground pin, and each color is activated by applying a positive voltage to its individual anode pin. In a common anode LED, all anodes share a single positive supply pin, and each color is controlled by pulling its cathode pin to ground. These 5mm diffused RGB LEDs use the common cathode configuration, making them straightforward to drive with Arduino or similar microcontrollers.

Q: Do I need a resistor to use these 5mm RGB LED diodes?

A: Yes. Always use a current-limiting resistor in series with each color pin to prevent exceeding the 20mA forward current rating. For a 5V supply, a 150–220Ω resistor per channel is a common choice. This protects the LED and ensures consistent, long-lasting brightness.

Q: Can these RGB LEDs be used with Arduino or Raspberry Pi projects?

A: Absolutely. The 4-pin common cathode design is ideal for use with Arduino, Raspberry Pi, and other PWM-capable microcontrollers. Connect the common cathode to ground, and wire each color pin through a resistor to a digital output pin. Use PWM outputs for smooth color mixing and dynamic lighting effects.

Q: What is the viewing angle and color quality of these diffused LEDs?

A: The diffused lens scatters light evenly across a wide viewing angle, producing a soft glow and smooth blending of the Red, Green, and Blue channels. This makes them especially well-suited for ambient and decorative lighting applications where uniform color spread is preferred over a focused beam.