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

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