COB LED Chip Light Bead 3W 5W 7W 10W 12W 15W 28mm 85-100lm/W 10 Pack DIY

This 10-pack of COB LED light beads provides high-efficiency LED chips suitable for DIY lighting builds, fixture repairs, and component-level replacement in downlights, spotlights, and other LED luminaires. Each bead uses a 9×22 MIL chip configuration mounted on a Φ28mm substrate, with the 15W variant on a Φ20mm substrate, delivering consistent luminous efficiency of 85–100 lm/W across all power ratings.

Six wattage options are available — 3W, 5W, 7W, 10W, 12W, and 15W — each with a corresponding forward voltage and LED quantity to match different driver and fixture requirements. All variants operate at 240–260mA current. These are bare LED components and require an appropriate constant-current LED driver matched to the forward voltage of the selected chip. They are not compatible with direct mains voltage and are intended for use by those with electronics and LED driver knowledge.

Each pack contains 10 identical beads of the selected wattage and power configuration. Suitable for white light applications in residential and commercial fixture repair, custom LED build projects, and lighting prototyping.

Brand: Warm and Happy

Model: TD0002

Key Features

• COB LED light bead for DIY builds and fixture repair
• Luminous efficiency: 85–100 lm/W across all wattages
• Six wattage options: 3W, 5W, 7W, 10W, 12W, 15W
• Consistent operating current: 240–260mA
• Chip size: 9×22 MIL
• 28mm substrate (3W–12W) / Φ20mm substrate (15W)
• Requires external constant-current LED driver — not included
• Pack of 10 beads
• CCC certified
• Luminous Efficiency: 85–100 lm/W
• Chip Size: 9×22 MIL
• Certification: CCC
• Pack Size: 10 beads

Applications

• LED downlight and spotlight chip replacement
• DIY LED fixture builds and prototyping
• Custom LED grow light and work light assembly
• LED driver and circuit testing
• Residential and commercial fixture repair
• Electronics hobbyist and maker projects