20pcs a lot High Power LED COB Light Bulb 250mA Size 20MM 3W 5W 7W 10W LED Source Chip Light Lamp SpotLight Downlight Lamps DIY - AliExpress.io

Specifications

Brand Name

DT&ZM

High-concerned chemical

None

Origin

Mainland China

Certification

CCC

Model Number

DT2011

Current

250mA

Item Type

BALL

color

White /Warm white /Cold white

Power

3w/5w/7w/10w

3W voltage

DC9-9.6v need LED Driver

5W voltage

DC15-17V need LED Driver

7W voltage

DC20-22V need LED Driver

10W voltage

DC30-32V need LED Driver

Color Rendering Index

Ra>80

Light emitting area

11mm

Lumen

300-1000Lm

Beam Angle

360 degree

Working conditions

must have a radiator

Temperature condition

Can't be greater than 60 degrees

Required driver

LED constant current drive power

Product Description

Questions & Answers

Q: Can it be used directly on the car?

Answer: No, it cannot be used directly in the car, it needs a matching converter to use

Q: Can 3w directly use 12v?

Answer: No, 3w (DC9-10V working voltage) you need a constant current driver to use DC12V. If you use DC12V directly, the temperature will be too high, and the lamp beads will be burned.

Q: Do I need an extra heatsink? and LED driver?

Answer: The chip is very hot when it is working, and it needs an additional heat sink and a constant current drive to work.

Q: How to understand the serial-parallel circuit?

Answer: 1B3C means DC9-10V 125maA

2B3C means DC9-10V 250mA

2B5C means DC15-17V 250mA

2B7C means DC21-23V 250mA

2B10C means DC30-32V 250mA

Product Detail

Power：3W

Led number : 6LEDS

Voltage: 9-9.6V

Current : 240-260mA

Chip size : 9*22mil

Serial/Parallel: 3C/2B

Shiny surface ：φ11mm

Power：5W

Led number : 10LEDS

Lumen: 90-100lm/w

Voltage: 15-17V

Current : 240-260mA

Chip size : 9*22mil

Serial/Parallel: 5C/2B

Shiny surface ：φ11mm

Power：7W

Led number : 14LEDS

Lumen: 90-100lm/w

Voltage: 20-22V

Current : 240-260mA

Chip size : 9*22mil

Serial/Parallel: 7C/2B

Shiny surface ：φ11mm

Power：10W

Led number : 20LEDS

Lumen: 90-100lm/w

Voltage: 30-32V

Current : 240-260mA

Chip size : 9*22mil

Serial/Parallel: 10C/2B

Shiny surface ：φ11mm

Pros & Cons

Pros

Multiple power and color temperature options to suit various DIY lighting projects
360-degree beam angle provides wide, uniform light coverage
High color rendering index (Ra>80) for true-to-life, clear lighting
Bulk pack of 20 chips for large-scale lighting projects

Cons

Require a dedicated constant current driver, adding extra cost for buyers
Must be used with a heatsink to avoid overheating above 60°C
Not compatible with direct car power without additional converters and drivers
Only available in 20mm size, limiting use for smaller or larger custom fixtures

Common Questions

What power and voltage options are available for these LED COB chips?

They are available in 3W, 5W, 7W, and 10W power levels, each with a specific DC voltage range requiring a constant current driver.

What are the exact physical dimensions and beam angle of these chips?

They have a 20mm size, 11mm light emitting area, and a 360-degree beam angle for wide light distribution.

What additional components are required to operate these LED chips?

They require a matching LED constant current drive power supply and a heatsink to prevent overheating.

What lighting projects are these COB chips suitable for?

They are ideal for DIY spotlights, downlights, and other custom lighting fixtures.

Does this pack include any drivers or heatsinks?

No, the pack only includes 20 LED COB chips with no additional installation components.