COB
LED Strip
Continuous, dotless, and perfectly uniform linear lighting.
Engineered for visible light lines, narrow-gap installations, and high-end architectural applications.
- Uniform, dotless light output
- Up to 180° wide beam angle
- More flexible than traditional SMD strips
- Lifetime up to 50,000 hours
- OEM / ODM supported & Free samples available
COB LED Strip Manufacturer
Based in our advanced Vietnam factory, Xmart provides end-to-end manufacturing solutions for global lighting brands and distributors. We specialize in the development and mass production of high-density COB LED strips.
Whether you need customized Mono, Tunable White, RGB, RGBW, or long-run 48V solutions, our engineering team ensures absolute dotless performance, strict color consistency, and reliable project delivery. We fully support OEM/ODM, bulk procurement, and long-term partnerships.
What Is COB?
COB stands for Chip on Board. In this packaging technology, LED chips are mounted directly onto the printed circuit board (PCB).
Unlike traditional SMD (Surface Mounted Device) LEDs, COB eliminates the conventional LED packaging structure (like brackets and gold wires inside a plastic casing). It retains only the core light-emitting chip, the phosphor layer, and the essential connection structure, creating the foundation for a seamless light emitting surface.
Direct PCB Integration
Engineered with advanced thermal management and superior luminous efficacy. Our high-density chip mounting guarantees industrial-grade durability for large-scale commercial lighting networks.
What Is COB LED Strip?
A COB LED Strip is formed by continuously mounting these chips in a dense linear array directly onto a flexible PCB. The entire chip surface is then covered with a continuous layer of mixed phosphor gel.
This design creates a perfectly uniform emitting surface, which is why it is often referred to as a continuous LED strip or dotless LED strip. It is the ideal solution for visible light lines, close-range illumination, and high-end linear lighting where individual LED hotspots are unacceptable.
Flawless Dot-Free Illumination
Delivering continuous, uniform light distribution tailored for premium architectural spaces. Manufactured to stringent global standards with UL, ETL, and CE certifications.
What are the benefits of COB Strip?
Why lighting contractors and project managers are shifting from traditional SMD to COB LED strip lights for commercial and architectural installations.
Continuous, Dotless Illumination
Continuous phosphor coating eliminates hotspots completely. For high-end interior lighting, this means a perfectly smooth linear glow without the need for deep, frosted aluminum profiles.
Superior Bending Flexibility
Direct chip-on-board (COB) technology reduces mechanical stress on the diodes. This allows for tighter bending radiuses, making custom architectural layouts much easier for installers.
Wider 180° Beam Angle
Unlike standard 120° SMD strips, COB LED strips provide a 180° light distribution. This broader spread is ideal for shallow extrusions and seamless surface illumination.
Lower Maintenance Rates
High-density LED packaging (up to 528 LEDs/m) means no noticeable dark spots even if a single diode fails. This drastically reduces maintenance calls and replacement costs.
Extended 50,000-Hour Lifespan
Direct attachment to the flexible PCB ensures rapid heat dissipation. Better thermal management guarantees a stable 50,000-hour lifespan, crucial for large-scale commercial projects.
Ideal for Direct-View Applications
When the light source is directly exposed to the eye, COB strips deliver premium, glare-free aesthetics perfect for retail displays, cabinetry, and modern office spaces.
Application Scenarios
Architectural Lighting
Furniture & Wine Cabinet
Hotel Renovation
KTV & Bar Lighting
Parking Lighting
Shopping Mall Lighting
Quick Series Overview
Product Types
Mono, Tunable, RGB, RGBW, SPI, 48V
Chip Density
320 to 860 chips/m
Beam Angle
180° Ultra-Wide
PCB Width
2.8mm / 8mm / 10mm / 12mm
CRI
Ra > 90 (Mono/White)
Voltage Options
12V / 24V / 48V
Cut Length
25mm (12V) / 50mm (24V)
OEM Support
Fully Customizable
Mono COB LED Strip
The foundation of dotless linear lighting. Delivering pure, continuous single-color and white light without any visible hot spots. Ideal for high-quality visible light lines and architectural accents.
- Colors: White (2700K, 3000K, 4000K, 6500K), Red, Green, Blue, Yellow, Orange, Pink, Ice Blue.
- Density: 480 chips/m standard.
- PCB Width: 4mm / 8mm / 10mm options.
- Quality: CRI > 90 for exceptional color rendering.
Tunable White COB LED Strip
Seamlessly transition between warm and cool white without sacrificing the dotless effect. Perfect for high-end hospitality, residential ambiance, and human-centric lighting designs.
- CCT Range: Smooth adjustment from 2700K to 6500K via controller.
- Density: Up to 576 chips/m for absolute uniformity.
- Wiring: Standard 3-wire 10mm PCB, or innovative 2-wire 8mm PCB options available.
- Performance: Zero light spots during color mixing.
RGB COB LED Strip
Vibrant, dynamic color without the dots. High-density RGB COB strips blend colors flawlessly at the source, making them ideal for visible decorative lighting, entertainment venues, and gaming setups.
- Density: Ultra-high density up to 1134 chips/m.
- Color Mixing: Flawless RGB blending with no lighting dots visible.
- Control: Compatible with standard RGB controllers for millions of colors.
- Application: Elevates atmospheric and accent lighting to a premium level.
RGBW COB LED Strip
The ultimate hybrid. By integrating a dedicated white light diode alongside RGB within the COB structure, you achieve both vivid dynamic colors and pure, practical white illumination.
- Pure White: Delivers a much cleaner white light than RGB mixed white.
- Versatility: Perfect for spaces requiring both functional task lighting and atmospheric color.
- Uniformity: Maintains the signature dotless glow across all 4 channels.
- Premium Choice: The standard for high-end residential and commercial projects.
RGBCCT COB LED Strip
Engineered for massive architectural scale. The 48V platform drastically reduces voltage drop, allowing for exceptionally long continuous runs from a single power feed while maintaining perfect brightness consistency.
- Long Runs: Run up to 30-50 meters (depending on wattage) with uniform brightness.
- Efficiency: Lower current means less heat generation and safer operation over distances.
- Dotless: Retains all the seamless, dot-free advantages of standard COB.
- Application: Ideal for expansive coves, long corridors, and large-scale commercial facades.
RGB-SPI COB LED Strip
Unlock dynamic, pixel-level control with our RGB-SPI Addressable COB LED Strips. Utilizing advanced IC technology, these strips deliver fluid chasing, meteor, and rainbow effects without visible dots. Manufactured in our state-of-the-art Vietnam factory, ensuring enterprise-grade reliability and seamless integration for complex architectural and stage lighting projects.
- Addressable Control: Individually addressable ICs for programmable, dynamic lighting effects.
- Global Certifications: UL, ETL, CE, CB, and RoHS certified for worldwide project compliance.
- Seamless Output: High-density chip placement guarantees a completely dotless, smooth light output.
- OEM/ODM Ready: Flexible customization options directly from our Vietnam manufacturing facility.
48V COB LED Strip
Maximize installation efficiency with our 48V Ultra-Long Run COB LED strips. Designed specifically for expansive commercial spaces and large-scale architectural applications, this high-voltage solution ensures zero voltage drop over extended runs up to 50 meters. Enjoy perfect brightness consistency from end to end, backed by the robust production capacity of our Vietnam facility.
- 50m Continuous Run: Significantly reduce the need for multiple power supplies and complex wiring.
- Exceptional Efficiency: 48V system operates with lower current, minimizing heat generation and maximizing lifespan.
- Enterprise Quality: Built for continuous operation in demanding environments, fully UL and ETL certified.
- Cost-Effective Scaling: Ideal for large infrastructure, hospitality, and retail projects requiring massive linear lighting.
How To Produce COB LED Strip
Advanced precision engineering at our Vietnam facility ensures every meter meets rigorous quality standards.
Die Bonding
01Mounting bare LED chips directly onto the flexible PCB.
Resistors Mounting
02Mounting precise resistors onto the FPCB for current control.
Reflow Soldering
03High temperature processing (>65°C) for finished PCB with chips and resistors.
Semi-Product Testing
04Rigorous intermediate quality testing of the assembled FPCB.
Glue Mixing
05Precisely mixing optical-grade silicone and fluorescent glue.
Glue Coating
06Dropping the mixed glue uniformly on the surface of chips and resistors.
Oven Curing
07Baking the glued COB LED strip in the oven to solidify the encapsulation.
Depaneling
08Carefully separating the continuous COB strip panels one by one.
Soldering & Reeling
09Soldering the PCB into 5m reels and connecting with power cables.
Aging & QC Test
10Comprehensive aging tests and final quality control inspection.
Solder-free COB Connectors
When soldering isn't feasible on-site, our specialized solderless connectors provide a secure, quick-snap solution designed specifically for the unique profile of COB strips.
Waterproof Connector
Seamless Connector (IP20)
IP20 Fast Connector
How to Cut, Connect and Power COB LED Strip?
Show buyers how COB LED strips can be cut, reconnected and routed more easily with fast connectors for cleaner installation and faster project assembly. Can COB LED Strip be connected without soldering? Yes. COB LED Strip gives a more continuous and dot-free light line, but buyers also need to understand how to cut it correctly, reconnect sections and route corners or cable transitions without making installation too complicated.
Cable Connector
Use a COB LED strip cable connector when two sections need to be linked with a cable gap, such as across cabinets, shelves or separated mounting positions.
Step A Cutting COB LED Strip
Cut the COB LED strip only at the marked cutting point to avoid damaging the circuit.
Step B Putting 2 Strips into Connector
Insert the COB strip ends into the connector carefully and align the contact points.
Step C Pressing the Connector
Press the connector firmly to lock the strip in place and ensure electrical contact.
Middle Connector
Use a middle connector when two COB LED strip sections need to be joined directly in a straight line without additional cable.
Step A Cutting COB LED Strip
Cut both COB LED strip sections cleanly at the marked cut lines.
Step B Putting 2 Strips into Connector
Insert both strip ends into the middle connector and make sure the conductive pads line up correctly.
Step C Pressing the Connector
Press the connector to secure both strip ends and complete the straight-line connection.
L Shape Connector
Use an L shape connector when the COB LED strip needs to turn a corner cleanly, especially for cabinet, shelf or display lighting layouts.
Step A Cutting COB LED Strip
Cut the COB LED strip at the correct cutting point before preparing the corner connection.
Step B Putting 2 Strips into Connector
Insert the two strip ends into the L shape connector and keep the pad alignment consistent on both sides.
Step C Pressing the Connector
Press the connector firmly so the strip sections stay fixed and the corner connection remains reliable.
Power Planning Still Matters
Even when fast connectors simplify cutting and joining, buyers still need to plan power feed points, total run length and voltage drop correctly for stable COB LED strip performance. How should buyers think about power after connecting COB LED Strip? Always ensure your power supply matches the requirements of the newly assembled lighting run.
Advanced COB LED Strip Manufacturing
High-performance lighting solutions tailored for wholesale and enterprise projects. Backed by comprehensive OEM/ODM services and international certifications (UL, ETL, CE, CB, RoHS).
Seamless COB Series
12V / 24V Custom Configurations
Cutting & Soldering COB LED Strip Lights
Despite the continuous phosphor coating, COB strips are designed for easy customization in the field. Clear cut marks are exposed on the back or indicated on the front.
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Precision Cutting: Standard increments usually at 50mm for 24V, and 25mm for 12V systems.
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Reusability: Cut segments can be fully reused.
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Optimal Connection: Soldering directly to the exposed copper pads remains the most reliable and permanent connection method.
Rigorous Product Testing
Before reaching mass production, every COB series undergoes exhaustive structural, thermal, and photometric validation. We guarantee that the dotless performance and color consistency endure through the product's lifespan.
Global Certifications
Our COB LED strips meet the highest international safety and performance standards. Compliant with CE, RoHS, and LM80, ensuring absolute confidence for commercial and architectural deployments.
Why Choose Xmart COB Series?
A superior linear lighting solution backed by robust manufacturing capabilities.
Dotless Continuous Light
Flawless illumination without diffusers.
Better Visible Effect
The premium choice for direct-view architectural lines.
More Flexibility
Highly pliable FPCB for complex curves.
Wider Beam Angle
180° spread for broader, softer coverage.
Longer Lifetime
Excellent heat dissipation ensures 50k+ hours.
OEM / ODM Support
Tailor-made solutions from our Vietnam factory.
Custom My COB LED Strip
Configure every specification to meet your exact project requirements.
Custom My IP
Bare PCB board with exposed LED chips.
No waterproof protection.
Suitable for dry indoor environments.
Nano coating surface treatment.
Ultra-thin layer for dust and splash resistance.
Ideal for damp indoor areas.
Heat-shrink tube casing.
Clear protective sleeve for basic moisture resistance.
Good for enclosed outdoor fixtures.
Silicone drip coating.
Protects against water jets from any direction.
Common for kitchens and bathrooms.
Silicone half-extrusion.
Enhanced durability and UV resistance.
For demanding indoor and semi-outdoor use.
Hollow silicone tube.
Fully encased, protected against temporary immersion.
Perfect for outdoor architectural lighting.
Solid silicone extrusion.
Superior waterproofing and mechanical protection.
Built for harsh outdoor environments.
PU potting fully sealed.
Designed for long-term underwater immersion.
Ideal for pools, fountains, and marine use.
COB Driver & Installation Support
Complete ecosystem components for seamless integration.
LED Driver
High-efficiency, flicker-free power supplies matched to your COB voltage (12V/24V/48V).
Controller
Precision-engineered solderless clips designed specifically to grip the COB profile securely.
Remote Controller
Comprehensive wiring guides, aluminum profile matching, and technical consulting.
Common Failure for COB LED Strip
Avoid these typical handling errors to ensure optimal performance and longevity.
Wrong Cut Position
Poor Soldering After Cut
Connector Mismatch
Damage from Incorrect Bending
COB Connection Diagrams
Comprehensive wiring topologies for advanced LED strip systems. Optimized for precise integration and large-scale installations.
Single Color
Standard 2-pin (V+/V-) architecture. Illustrating Constant Voltage Driver → Dimmer/Controller → Single Color COB Strip with standard cut points.
Tunable Color (CCT)
3-pin (V+/CW/WW) architecture for dynamic color temperature control. Illustrating Driver → CCT Controller → Tunable White COB Strip.
RGB Color
4-pin (V+/R/G/B) architecture for full-spectrum color mixing. Illustrating Driver → RGB Controller → RGB COB Strip with synchronized connector logic.
RGBW Color
5-pin (V+/R/G/B/W) architecture integrating a dedicated pure white channel. Illustrating Driver → RGBW Controller → Multi-channel COB Strip.
RGBCCT Color
6-pin (V+/R/G/B/CW/WW) architecture for ultimate lighting versatility. Illustrating Driver → 5-in-1 Controller → RGBCCT COB Strip.
RGB-SPI (Digital)
3-pin (V+/Data/GND) digital architecture for addressable IC pixel control. Illustrating Power Supply → SPI Controller → Programmable Chasing COB Strip.
Frequently Asked Questions
COB stands for Chip on Board. It involves mounting LED chips directly onto a flexible PCB and covering them with a continuous phosphor layer. This creates a dotless, uniform line of light.
SMD (Surface Mounted Device) uses individual packaged LEDs, which can create visible light dots (hotspots). COB places bare chips directly on the board with a continuous coating, resulting in a completely smooth, dot-free output and a wider 180° beam angle.
Yes. COB strips can be cut at designated cut marks (e.g., every 50mm for 24V, or 25mm for 12V). The cut segments can be reused by soldering wires to the exposed copper pads or using dedicated connectors.
Yes, we provide specialized solderless COB connectors for strip-to-wire, strip-to-strip, and corner connections to simplify installation.
We offer a full spectrum: Mono colors (White, Red, Green, Blue, etc.), Tunable White, RGB, and RGBW.
Yes, we provide free samples for B2B clients, wholesalers, and project specifiers to evaluate quality before bulk orders.
Looking for a more reliable COB LED Strip supply partner?
Connect with our factory team in Vietnam. We provide full technical specifications, custom OEM/ODM solutions, and free samples for qualified B2B projects.