COB dual color CCT LED strip

Product Description:

COB dual color LED strip also known as COB color temperature adjustable LED strip or COB dual white led strip or COB CCT LED strip or COB tunable led strip, is a series of LED light strips equipped with warm white LEDs and cold white LEDs, its core function is to allow users to freely switch the warm and cold tones of the light according to their needs (such as from warm white 2700K to cold white 6500K).

Easton Technology Co., Ltd.'s COB LED Strip products include  576leds/m,612leds/M,640leds/M，608Leds/M. These products are available in 5V&12V & 24V specifications. They can also provide multiple protection levels such as IP20/IP65/IP67/IP68, and can be used in different application scenarios. Easton Technology can also provide power supplies, controllers, aluminum profiles and other related accessories. In addition, Easton Technology also provides customized services, including wire length, PCB width, LED QTY, connector specifications, logo, packaging, LED light strip length, etc.

Product Specifications:

PCB color:
White: white PCB
Protection level:
(1) IP20 --- not waterproof, for indoor use
(2) IP65 --- silicone coating, easy to cut, for outdoor use
(3) IP67 --- silicone tube, needs to be resealed after cutting, for outdoor use
(4) IP68 --- waterproof by glue filling, can work underwater

COB dual color CCT LED Strip Features：

1. ) Adjustable color temperature: Users can adjust the color temperature between warm yellow light (such as 2700K) and cool white light (such as 6500K) steplessly or in steps, creating any light color in between (such as neutral light 4000K).

2. )Simplify design and procurement: No need to purchase and install fixed color temperature light strips for different rooms or lighting requirements. One product can meet multiple needs.

 3. )Enhance the quality of space: Flexible lighting environments are a key feature of smart homes and high-end lighting, significantly improving quality of life.

4. )Control Method: Requires a dedicated controller, such as

Simple Remote: Directly switches between preset color temperatures and brightness.

Smart App/Voice: Detailed control via a mobile app or voice assistant.

Dimmer: Use a dedicated dual-color temperature dimmer switch (2.4g/Dali/Zigbee, etc.).

5.)Lighting Efficiency and Color Rendering:

Mixing Uniformity: COB CCT led strips mix light evenly, creating a soft, uniform glow without visible two-color flares.

High Color Rendering: Similar to single-color light strips, they offer a high color rendering index (CRI>90).

 Disadvantages:

1.) Higher Cost: Compared to single-color temperature strips, dual-color CCT strips are more expensive, and a separate controller is required, increasing overall costs.

2.) More Complex System: Multiple components, including the strip, power supply, and controller, must be installed and connected, making wiring and operation somewhat complex.

3.) Risk of Uneven Light Mixing: Low-quality dual-color temperature strips may produce an uneven blend of warm and cool light, resulting in yellow and white patches on the strip.

 Typical Applications for COB CCT LED Strips:

The flexibility of dual-color CCT strips makes them suitable for nearly any lighting application requiring different atmospheres:

1.) Home Lighting:

Living Room/Bedroom Ceiling Troughs: Switch color temperature based on time of day and activity (e.g., meeting guests, watching a movie, reading).

Under Kitchen Cabinets: Use cool white light for clarity when cutting vegetables, and warm white light for a more inviting dinner.

Study Bookshelves: Use cool white light for work and warm yellow light for relaxation. 2.) Commercial Spaces:

Retail Stores: Use different color temperatures for different products (e.g., warm light for furniture, cool light for electronics) to flexibly adjust the display atmosphere.

Cafés/Restaurants: Use neutral light during the day for a bright and airy appearance, and warm yellow light at night to create an intimate and cozy dining environment.

Hotel Rooms: Provide guests with a customizable lighting environment to enhance their stay.

How to Choose and Use COB CCT LED Strip Products:

Clarify Your Needs: Ask yourself whether you truly need color temperature adjustment. If a space's lighting needs are very fixed (e.g., a garage that only needs bright white light), then a more cost-effective fixed color temperature strip is a better choice.

Key Parameters to Pay Attention to:

Color Temperature Range: Commonly, 2700K to 6500K is recommended. The wider the range, the greater the degree of adjustability.

Color Rendering Index (CRI): Choose products with a CRI ≥ 90 (marked as RA90) to ensure true color fidelity.

Control Method: Determine your usage habits. Do you prefer simple remote control or integration with a smart home system for automated or voice control? Matching Components: Ensure that the specifications of the power supply, controller, and light strip match (especially voltage, wattage, and connector type). Purchasing a set is often a worry-free and reliable option.

Testing Light Mixing: Before purchasing a long light strip or a large quantity, it's best to test a small sample with power to ensure uniform light mixing and smooth color temperature transitions.

The production process of COB led strip products of Easton Technology Co., Ltd. is:

1.) First coat the PCB pads with solder paste through an automatic solder paste machine. The coating uniformity and thickness of the solder paste determine the quality and flatness of the soldered chips, as well as the quality of the soldered chips; Apply solder paste

2.) Load the PCB board coated with solder paste on the carrier, input and set the die-bonding program of the chip through computer programming, adjust the direction and height of the die-bonding, and confirm the electrode direction of the chip;

3.) Do a small-batch die-bonding test first, and inspect the appearance quality of the solid-bonded PCB to determine the direction of the die-bonding, whether there is solder paste connected, and whether the position of the die-bonding is correct, and the inspected product will flow into the next process. ;

4.) Put the solid crystal PCB board and wafer into reflow soldering, set the temperature and speed of reflow soldering, solder the LED chip firmly in the reflow soldering, and conduct an electrical test after being released to test whether the LED chip emits normally. ;

5.) After testing the LED chip on the PCB board, carry out the powder mixing process of silica gel and phosphor powder, according to the photoelectric parameters such as color temperature and brightness specified by the customer, carry out different proportions of configuration, and carry out positive air defoaming of the prepared glue

6.) Fix the PCB board on the glue dispenser carrier for the glue dispensing process. The glue dispensing process is the most critical process for the success of the light strip. After dispensing, put the PCB board into the oven for baking. The glue from different manufacturers If the baking conditions are inconsistent, you must refer to the manufacturer's requirements for verification before setting the appropriate baking temperature.

7.) After the glue is dispensed, test the photoelectric parameters of the light strip to see if the test data meets the customer's requirements.

8.) After welding the 0.5-meter PCB board, connect it to the requirements ranging from 5-10 meters;

9.) Aging detection

10.) Pack the light strip with a reel after testing the adhesive;

11.) Check again after the reel, put it in an electrostatic bag, and pack it into a box

The differences between COB led strip products and SMT LED strip products of Easton Technology Co., Ltd. are as follows:

COB dual color CCT LED strip product details: