10PCS 3mm RGB Flash LED Diodes – Fast & Slow Rainbow Multi-Color Light Beads

Bring vibrant, eye-catching color to your next DIY electronics or decoration project with these 3mm RGB flashing LED diodes from HVIERO. Each pack includes 10 clear-lens bulbs that cycle automatically through red, green, and blue — no additional controller needed. Available in both fast flash and slow flash modes, these compact emitting diodes are perfect for everything from billboard accents and holiday displays to home bar ambiance and landscape lighting.

Made in Mainland China.

Key Features

Auto RGB Color Cycling: Built-in controller cycles through red, green, and blue automatically — no external driver required.
Fast or Slow Flash Mode: Choose the flash speed that suits your project — energetic rapid strobing or a gentle, smooth color transition.
Water-Clear Lens: Transparent colloidal lens delivers crisp, vivid color output with maximum visibility.
Low Voltage & Energy Efficient: Operates at 2.0–3.4V with just 10–20mA current draw — approximately 40% lower power consumption than traditional incandescent options.
Wide Operating Temperature Range: Rated from -55°C to +100°C, suitable for both indoor and outdoor environments.
No Harmful Materials: Mercury-free construction for safer handling and disposal.
Long Service Life: Durable solid-state construction ensures extended use across many projects.
Quick Response Time: Near-instantaneous activation, ideal for dynamic lighting effects and signage.

Technical Specifications

Model: F3 3mm Fast/Slow Flash RGB Round LED (700A/B-45)
Lens: Water clear / colloidal transparent
Forward Voltage: 3.2–3.4V (blue, green) / 2.0–2.4V (red)
Operating Current: 10–20mA
Power Consumption: 100mW
Pulse Current: 60mA
Reverse Voltage: 6V
Reverse Current: 10µA (test condition: 5V)
Lead Length: Positive 17.5mm / Negative 15.5mm (±0.5mm)
Soldering Temperature: 260°C (complete within 5 seconds)
Working Temperature: -55°C to +100°C
Storage Temperature: -55°C to +100°C
Certification: CE
Quantity: 10 PCS per pack

Ideal Applications

DIY electronics, breadboard circuits, and hobbyist projects
Billboard and signage decoration
Holiday sculptures, light displays, and festive décor
Bars, discos, entertainment venues, and retail showcases
Landscape lighting: bridges, parks, porches, staircase railings, ceilings
Active signs, displays, and themed installations

What's in the Box

10× 3mm Fast or Slow Flash RGB Round LED Diodes (select your preferred flash mode)

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For more information on LED technology and safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: Do these 3mm RGB flash LED diodes require an external controller to change colors?

A: No! Each LED contains a built-in integrated circuit that automatically cycles through red, green, and blue colors. Simply connect them to a compatible power supply (2.0–3.4V) and they flash on their own — no external controller, driver, or microcontroller needed.

Q: What is the difference between the fast flash and slow flash versions?

A: The fast flash version rapidly strobes through the RGB color sequence, creating a lively and energetic lighting effect — great for party lighting, bar décor, or dynamic signage. The slow flash version transitions smoothly and gradually between colors, lending a calmer, more atmospheric glow suitable for ambient decoration or landscape lighting.

Q: Can these LEDs be used outdoors?

A: Yes. These LEDs are rated for a wide operating temperature range of -55°C to +100°C, making them suitable for outdoor installations such as garden lighting, bridge railings, porches, and park landscapes. However, they are not waterproof on their own — for permanent outdoor use, consider using a protective enclosure or waterproof housing.

Q: What power supply do I need for these RGB flash LEDs?

A: These diodes operate at 2.0–3.4V forward voltage with a current of 10–20mA. A standard 3V coin cell battery, USB-regulated power supply, or a current-limited 3.3V output from a microcontroller (such as Arduino) works perfectly. Always use a current-limiting resistor when connecting to higher voltage sources.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

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