COB LED

Your Professional COB LED Supplier！

Shenzhen Colighting Ltd (WELCOB) was founded in Shenzhen, China in 2013 and located in Pingkui Road, Pingshan District, Shenzhen, was awarded the China National High-Tech Enterprise certification in 2021 focusing on high-end LED COB technology development, PCB circuit design and LED lighting solutions.

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Why Choose Us

01.

Rich Experience

WELCOB has 20+ years of research and development in LED package and semiconductor fields. Strives to become a world famous brand of high-end LED light source.

02.

Advanced technology

We have common led assembly process for commercial cob and we have eutectic bonding process for ultra-high power COB (>1000W) and we have powder spraying process for multi-color COB LED and we have RFID tracing technology for LED inventory management system.

03.

Our Certificate

WELCOB Awarded RoHS, CE, ETL Certifications, National High tech Enterprise Certification, Obtained Utility Model Patent: System-level Integrated Lighting Module.

04.

Sales Market

Our products Export United States, Vietnam, Japan, Britain, Italy, Russia, India, Brazil, Spain, the Middle East and other countries and regions.

COB LED - Overview

COB (Chip on Board) LED is a technology that packages multiple LED chips together on a single circuit board. This differs from traditional LEDs, which have individual bulbs spaced apart. The result is a more uniform, consistent, and often brighter light source that is more energy-efficient and can have a longer lifespan.

Product Specification

We offers the following product specifications:

Product name	12V 50W COB LED
Model	HC4046-12-50W-CW
Power	50W
Input Voltage	DC 12V
Working Current	4.2A
Drive mode	Constant voltage
LED type	Flip chip COB
Board size (LxW)	40x46mm
Board Thickness	1.5mm
Emitting size (LxW)	25x25mm
Color	Cool white
CCT	6000-6500K
CRI (Ra)	70/80/90
Luminous efficiency	110-140 lm/W
Viewing angle	120°
Substrate material	2.0W High performance aluminum material
Lifespan	50000 hrs
Customized options	Input voltage, Watt, Color, Size, Efficiency, Logo

Advantages of COB LED

Luminosity

COB LED produce a high luminosity with a more intense, focused source of light. The brightness of these LEDs means they produce more lumens per watt, which in turn translates to a saving in energy. This not only means COB LEDs are more eco-friendly but they are also more friendly on your wallet, helping to save energy costs.

Uniform Output

The close proximity between LED chips in COB lights produces an extremely consistent lighting output. SMD LEDs only use one chip, creating the opportunity for space and inconsistencies in the lighting output, whilst COB offer strong illumination throughout, making them ideal for use in environments where even lighting is essential such as on building sites and shops.

Enhanced Heat Control

COB LEDs are designed to have better thermal management, with the LED chips being mounted directly onto a conductive plate or surface. This not only reduces the risk of overhearing but it helps to extend the life of the LEDs by reducing the risk of burning out.

Durable

COB lights are often robust in their design and their longevity means they are suitable for a range of environments and applications. You can use COB lights to provide consistent, continuous light in outdoor environments and in adverse weather conditions like wind and rain, making them perfect for use in cars and construction lighting.

Applications of COB LED

Indoor Lighting
COB LEDs are widely used in indoor lighting applications, such as residential homes, commercial buildings, and retail spaces. The high intensity and color rendering capabilities of COB LEDs create a comfortable and visually appealing environment.

Automotive Lighting
COB LEDs are employed in automotive lighting systems, including headlights, taillights, and indicator lights. The compact size and high brightness output make them ideal for automotive applications.

Stage and Entertainment Lighting
The superior color mixing capabilities of COB LEDs make them a preferred choice for stage lighting, concerts, theaters, and other entertainment events.

Horticulture
COB LEDs are increasingly used in horticultural lighting systems to provide optimized light spectra for plant growth, enhancing crop yield and quality.

Structure of COB LED

A CoB LED is a single device with many LED chips mounted on a thermally efficient substrate, or board. Each chip is a bare die – that is, the chip does not have its own leadframe, phosphor coating or lens. This means that the chips can be mounted extremely closely together on the substrate. The close placement of the LED chips allows for high intensity or light density to be emitted from a smaller area than is possible with single packaged LEDs. The CoB LED manufacturer then applies a uniform phosphor coating to the entire array of chips to convert the blue light to the required white color temperature.

CoB (chip-on-board) refers to the way in which the LED unit is constructed. The basic elements of white CoB LEDs are:
● An electrical power supply to provide the energy to drive the LED
● The light-emitting chip or ‘die'. This is sometimes referred to as the blue light pump, and is made of a semiconductor material, indium gallium nitride (InGaN), which emits blue photons when energized
● A phosphor coating which converts the blue light to white. The chemical composition of the phosphor is controlled to produce light of a specific color temperature

Customization

We are China leader Chip on board LED custom Manufacturer, offering the full choices of LED COB products from round, square, strip, and customized to any of your requirements.

Wide range of sizes, color temperature and power.creating a fashionable energy-saving solution for all kinds of LED related fields.

We design your samples in 24 hours.

We build prototypes in 7-14 days.

We deliver in 1-2 days.

Package & Delivery

1. Package: Standard export package or Custom

2. Delivery: By air express, by sea

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FAQ

Q: Is COB LED better than LED?

A: COB light source is a high-efficiency integrated surface light source technology in which LED chips are directly attached to high-reflectivity mirror metal substrates. This technology eliminates the concept of brackets and is more efficient than LED lights. A more advanced and eye-friendly light.

Q: How long does COB LED last?

A: 50,000 hours
A COB LED has an average rated lifetime of 50,000 hours. That is assuming a person uses them for 12 hours a day on average.

Q: Can COB LED be cut?

A: COB LED strips can be cut, but it's crucial to locate the designated cut points and use a sharp, precise tool. Always turn off the power before attempting any cuts.

Q: Is COB light good for home?

A: Now that you know what are COB lights, they are the ideal option if you want enhanced brightness and intensity. They offer numerous benefits, such as energy efficiency, brightness, and compact design and they find applications across residential, commercial, industrial, automotive, and horticulture sectors.

Q: What is the maximum length of COB LED?

A: The 16.4-feet reel provides plenty of length to customize your lighting setup. This COB LED Strip's maximum run length is 32.8 feet (2 reels). After the maximum run length, the voltage drop becomes too great, and you will lose light and efficiency from your system.

Q: Can WELCOB customize LED products?

A: Yes, we can tailor our LED products for various industries, including horticulture, industrial lighting, stage lighting, projection lighting, UAV lighting, etc.

Q: How many samples can I request?

A: The quantity varies based on the product and your needs. Our sales team will determine the appropriate number for your project.

Q: Do you offer volume discounts?

A: Yes, we provide discounts for large orders. Contact our sales team for a customized quote.

Q: Is there a warranty for your products?

A: Yes, all products come with a warranty which varies by model. We will repair or replace defective items during the warranty period.

Q: How do you handle complaints?

A: We take complaints seriously and will investigate promptly, keeping you updated until a resolution is reached.

Q: What is your sample policy?

A: If we have stock, we can provide samples, but the customer must pay the sample fee and express fee Question

Q: Have you tested all your goods before shipment?

A: Yes, we will conduct 100% test before delivery, and we will send detailed photos of parts for your approval Question .

Q: How can you maintain a long-term good relationship with our business?

A: We maintain good quality and competitive prices to ensure the interests of our customers.

As one of the leading cob led manufacturers and suppliers in China, we warmly welcome you to buy cob led for sale here from our factory. Quality products and reasonable price are available.