10pcs/lot Sumbulbs DC9-11V 3W Round Chip On Board COB LED Light Source 28mm Diameter for Spotlight Downlight DIY Lamp Bulbs | Лампы и
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| Месяц | Минимальная цена | Макс. стоимость | Цена |
|---|---|---|---|
| Feb-18-2026 | 740.71 руб. | 755.59 руб. | 747.5 руб. |
| Jan-18-2026 | 600.89 руб. | 612.40 руб. | 606 руб. |
| Dec-18-2025 | 729.81 руб. | 744.65 руб. | 736.5 руб. |
| Nov-18-2025 | 723.56 руб. | 737.73 руб. | 730 руб. |
| Oct-18-2025 | 577.59 руб. | 589.10 руб. | 583 руб. |
| Sep-18-2025 | 711.31 руб. | 725.54 руб. | 718 руб. |
| Aug-18-2025 | 705.55 руб. | 719.29 руб. | 712 руб. |
| Jul-18-2025 | 700.5 руб. | 714.73 руб. | 707 руб. |
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10pcs/lot Sumbulbs DC9-11V 3W Round Chip On Board COB LED Light Source 28mm Diameter for Spotlight Downlight DIY Lamp Bulbs | Лампы и
Описание товара
10pcs/lot Sumbulbs DC9-11V 3W Round COB LED Chip On Board Light Source 28mm Diameter for Spotlight Downlight DIY LED Lamp Bulbs
![Sumbulbs COB LED Light Strip 10W 20W 30W 50W Lamp Bulb Warm Nature Cold White Blue Red Chip On Board DIY Lighting DC LED Matrix (1)]()
![Sumbulbs COB LED Light Strip 10W 20W 30W 50W Lamp Bulb Warm Nature Cold White Blue Red Chip On Board DIY Lighting DC LED Matrix (2)]()
Features:
3W 2820 round COB LED Chips Diameter: 28mm Lingting diameter: 20mm Power: 3W Rated current: 300mA Workinf Voltage : DC 9-11V Lignt temperature: 2700K-6500K Lingting colors: Warm white (3000K), Nature white (4000K), Cool white (6500K) Luminous efficacy: more than 100LM/W Application: Spotlights, Downlights, LED bulbs, other LED Lighting
Package Included:
10pcs 3W 2820 Round COB Chips
10pcs/lot 28
For other LED COB Strip, please click the below picture for more details:
What is COB?
COB (Chips on Board) is a new technology of LED packaging of LED light engine. Multi LED chips are packaged together as one light module. When it lights up, it looks like a lighting panel.
How COB LED light source works?
In COB lighting, single LED chips are placed directly on a circuit board (or substrate) which has thermal properties to disperse heat. Heat dissipation is a very important aspect of LED lighting since it can have a major impact on the life expectancy of the luminary. Therefore, COB lighting can have a higher LED chip density and achieve higher light level while maintaining or improving life expectancy.
Advantage of COB:
COB lights are a more efficient form of LED lighting for general or automotive lighting applications because:
- light has a more uniform appearance
- better life expectancy
- achieve higher light level over a large area
- COB is more stable and reliable than standard LED package
Applications:
Shenzhen Sumbulbs Environment Technology Co., Ltd., is a professional Manufacturer & Servicer for LED Lighting who has around 10-year experience in China.
Sumbubls Company has a complete & scientific Quality Management system, with a number of very experienced engineers and technicians, and is equipped with full of advanced high-tech equipment and production lines.
Sumbulbs mainly focused on the research & development of LED Lighting resource, the designing and producing of LED lights. Products range from COB chip, Ceiling Lights, Spotlights, Crystal Lamp, Tube Lights, Track Lamp, Street Lights, Miner Lamp, Project Lamp, Sunlight Lamp, to Flash Lights etc. Our products are widely used in hotel lighting, room lighting, office lighting, ourdoor lighting and industrial lighting and other lighting projects.
Our products are widely sold to abroad and domestic markets, and got very good high evaluations from our customers.
“Quality First” is always the driving power for Sumbulbs People.
Sumbubls, is on the road to be the next excellent GIANT in Environment Lighting.
10pcs/lot Sumbulbs DC9-11V 3W Round COB LED Chip On Board Light Source 28mm Diameter for Spotlight Downlight DIY LED Lamp Bulbs
1. Please do confirm the pricing / shipping and other details with the supplier before you placing an order.
2. Please do make sure that you’ve read the entire description and agree to the transaction before the shopping.
3. We accept Alipay, West Union, T/T(Bank transfer ), PayPal and credit card. All major credit cards are accepted through secure payment processor ESCROW.
4. If you can't checkout immediately after auction close, please wait for a few minutes and retry.
5. Payments need be finished within 15 days, or the order will be canceled and any promotion discount will be invalid.
We strongly recommend you choosing "Aliexpress Standard Shipping Method", because it's much more safe and faster.
1. If the goods is DEFECT/ BROKEN when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or refund. But the goods must be back in factory condition. Please contact us in advance and double check the return address before you return it.
2. If item is defective in 3 months, we could send you a new replacement for free or offer full refund after we receive the defective item.
3. If item is defective in 12 months, we could also offer you replacement service, but you have to pay for the extra shipping expenses.
Our aim is to provide Top Level Customer Service, and our customer service specialists are always standing by to solve any of your problem.
We greatly appreciate your 5-STAR POSITIVE feedback and please do not leave a NEGATIVE feedback without asking for help.
10pcs/lot Sumbulbs DC9-11V 3W Round COB LED Chip On Board Light Source 28mm Diameter for Spotlight Downlight DIY LED Lamp Bulbs
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