AC COB LED

Your Professional AC 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.

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.

AC COB LED - Overview

An AC COB LED is a type of LED lighting that directly connects to the high-voltage AC power mains without needing an external driver. The term "COB" (Chip-on-Board) refers to a technology where multiple LED chips are packaged closely together on a single board, creating a high-density, bright, and uniform light source. This design simplifies installation and can reduce costs, as it eliminates the need for a separate power converter.

Product Specification

We offers the following product specifications:

Product name	COB LED 15W
Model	HA55R84-220-15W-CW
Power	15W
Input Voltage	AC220V-240V
PF	>0.9
LED type	Flip chip COB
Board size (circle)	Φ54mm
Board Thickness	1.5mm
Emitting size (circle)	Outer Φ47mm, inner Φ30mm
Color	Cold white
CCT	6000K
Surge protection	3KV
Viewing angle	120°
Substrate material	High thermal conductivity aluminum plate
Lifespan	50000 hrs
Customized options	Input voltage, Watt, Color, Size, Lumens, Logo

Features of AC COB LED

Direct connection:

These lights can be plugged directly into a standard AC power outlet, removing the need for a separate low-voltage DC power supply or driver.

Chip-on-Board (COB) technology:

Instead of separate, packaged LEDs, numerous individual LED chips are mounted directly onto a single circuit board. This creates a solid, continuous light source with no visible "hot spots".

High density and brightness:

The close proximity of the chips results in very high lumen output, making the light source appear as a single, bright, and uniform surface.

Simplified design:

The built-in power conversion circuitry eliminates the need for an external driver, which reduces the overall size and cost of the lighting system.

Uniform illumination:

COB technology provides a smooth, continuous, and consistent light output, which is beneficial for applications like task lighting or backlighting.

Application of AC COB LED

01.

Residential applications

General and accent lighting: Used in living rooms, bedrooms, kitchens, and bathrooms for both ambient and task lighting.

Furniture integration: Built into cabinets, shelves, and countertops for functional and decorative light.

Outdoor lighting: Ideal for driveways, pathways, patios, and garden illumination.

02.

Commercial and architectural applications

Retail and hospitality: Used for display case lighting, general building illumination in hotels and hospitals, and ambient lighting in bars and clubs.

Office spaces: Effective for task lighting in office pods and desks.

Architectural highlighting: Can be used for accentuating features, wash lighting, and safety lighting on stairs or handrails.

Install of AC COB LED

COB LED bonding can be in two different methods - wire bonding and flip-chip bonding.

LED PCB wire bonding: The LED chip is connected to the PCB using a gold or aluminum wire, and then the chips are sealed by glue.

LED PCB flip-chip bonding: The P-N junction of the LED chips is directly bonded with the PCB without any gold or aluminum wires. Compared with wire bonding, the chips are flipped.

Wire-bonding COB LED PCBs are usually used for small-power LED lights, while flip-chip bonding COB LED PCBs are designed for high-power devices. You can see the ceramic COB LED PCBs we make for spotlights, which can work continuously for more than 10hours per day.

On a COB LED PCB board, you will notice that COB LEDs are placed together in a rounded or regular polygon shape.

When you use COB LED products, you will find that the light is shed evenly without a halo. This is because the LED light source is integrated.

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 light good for eyes?

A: In areas where tasks require focused light, such as kitchens or workspaces, COB spot lights provide excellent illumination, reducing strain on the eyes while increasing productivity.

Q: Are cob LED lights safe?

A: COB light strips are safe to use in temperature-sensitive locations because of their effective heat dissipation. For some higher-power LED strip lights, it is recommended to attach an additional heatsink, such as an aluminum channel, to make the most efficient heat transfer.

Q: Can COB lights be installed without a false ceiling?

A: While recessed COB lights are great for false ceilings, not all ceilings are suitable for this installation. That's where COB surface light fixtures come in. These are mounted directly on the ceiling or wall, making them perfect for areas with concrete or limited ceiling depth.

Q: Do COB lights consume more electricity?

A: Energy Efficiency: COB LEDs are highly energy-efficient, they can convert electricity into light rather than heat. This efficiency can reduce energy consumption and lower electricity bills, making COB lighting an eco-friendly and cost-effective choice.

Q: How to power a LED COB?

A: To power a COB LED, you need to use a constant voltage power supply (like a 12V or 24V DC supply) and correctly match its voltage to the LED's rating. Most COB LEDs require a current-limiting driver to prevent damage, though some strips have integrated electronics that allow direct connection to a suitable power supply. Always ensure the power supply can handle the wattage and that the final voltage/current is within the LED's specifications.

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

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