Double Ring COB Circular LED Chip 3V–4V 50mm 2W | DIY Light

Double Ring COB Circular LED Light Chip – 3V–4V DC, 50mm Diameter

Upgrade your DIY lighting builds with this compact and efficient Double Ring COB (Chip-on-Board) Circular LED Light Plate. Designed for hobbyists, makers, and automotive enthusiasts alike, this 50mm round COB module delivers bright, consistent illumination across a wide range of applications — all at just 2W of power draw.

Built on an aluminum-alloy substrate for excellent heat dissipation and long-term stability, this LED chip features ultra-low light attenuation (less than 1% over 1,000 hours) so your projects stay bright for longer. Choose from Warm White, Cold White, or Middle White color temperatures to suit your exact lighting needs.

⚠ Important Notice: A heatsink or radiator must be attached when operating this LED chip. Running without thermal management will shorten the component's lifespan.

Key Specifications

• Input Voltage: DC 3V – 4V
• Power: 2W
• Max Current: 1700mA
• COB Diameter: 50mm
• Lighting Area Diameters: 42mm (outer ring) / 28mm (inner ring)
• Material: Aluminum-alloy plate
• Light Colors Available: Warm White / Cold White / Middle White
• Light Attenuation: <1% over 1,000 hours
• Package Contents: 1× Round COB LED Light Chip

Applications

• Automotive accent and working lights
• Emergency and portable lighting
• Indoor DIY LED lighting projects
• Decorative lighting installations
• Electronics prototyping and maker builds

Why Choose This COB LED Chip?

COB (Chip-on-Board) technology packs multiple LED dies directly onto a single substrate, resulting in a much higher light density and a smoother, more uniform beam compared to traditional single LEDs. The double-ring layout maximizes luminous output within the compact 50mm footprint, making it ideal for space-constrained builds.

Made in Mainland China.

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

Learn more: Light-emitting diode

Frequently Asked Questions

Q: What voltage does this COB LED chip require?

A: This double ring COB LED chip operates on DC 3V to 4V input voltage. Always use a regulated DC power supply within this range to ensure safe and stable operation.

Q: Do I need a heatsink for this COB LED light plate?

A: Yes — a heatsink or radiator is required. COB LED chips generate heat during operation, and without proper thermal management the chip's lifespan will be significantly reduced. Attach an appropriately sized aluminum heatsink before powering the module.

Q: What color temperatures are available?

A: This COB LED chip is available in Warm White, Cold White, and Middle White. Select your preferred color temperature at the time of purchase to match your project's lighting requirements.

Q: What are the main uses for this round COB LED module?

A: This versatile 50mm COB circular LED chip is suitable for car lights, working lights, emergency lights, decorative lighting, and a wide range of indoor DIY LED lighting projects.