COB LED Strip
Manufacturer
Continuous, dotless, and perfectly uniform linear lighting.
Xmart Lighting supports lighting brands, distributors, fixture manufacturers and project suppliers with mono, tunable white, RGB, RGBW, RGBCCT, addressable and 48V COB LED strip platforms.
- COB platforms for visible linear light and shallow-profile applications
- Up to 180° wide beam angle
- Configurable voltage, color, PCB, cut length, IP construction and packaging
- - Model-specific sampling, certification and production-route confirmation
- OEM / ODM supported & Free samples available
COB LED Strip Manufacturer
Xmart supports lighting brands, distributors and fixture manufacturers with COB LED strip engineering, sampling and production programs. Engineering and rapid prototyping may be supported in China, while qualified production, assembly, testing, packaging and export coordination may be arranged in Vietnam.
The final manufacturing route, certification coverage and availability of Vietnam Certificate of Origin documentation are confirmed by model and order.
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.
When Should You Choose COB LED Strip for a Commercial Project?
A key benefit of COB LED strip is its closely spaced emitting surface, which can reduce the appearance of individual LED points in many close-view applications. It is often considered for commercial linear lighting, shallow profiles, cabinetry, retail displays and architectural details where the visible light line matters.
Visible Linear Light
COB construction can help reduce the visible pattern of individual LED points, making it useful for exposed or reflected light lines in architectural profiles.
Evaluate a lit sample using the intended aluminum profile, diffuser and viewing distance.
Shallow-Profile Integration
COB may create a more continuous appearance where there is limited mixing distance between the LED strip and the diffuser.
Check PCB width, profile depth, diffuser transmission, target output and operating temperature.
Close-View Commercial Fixtures
COB LED strip is commonly evaluated for cabinet lighting, shelves, retail displays and architectural details that may be viewed at short distance.
Review glare, reflected LED images, CCT, CRI and color consistency in the actual fixture material.
OEM/ODM COB Platforms
For lighting brands, distributors and fixture manufacturers, Xmart can evaluate mono, tunable white, RGB, RGBW, RGBCCT, addressable and 48V COB LED strip platforms.
Confirm the exact model, voltage, channel layout, controller, PCB width, cut length, IP construction, certification coverage and approved sample.
“Dotless” Is a Visual Result, Not a Universal Specification
The term “dotless LED strip” describes the intended visual appearance rather than a guaranteed result under every installation condition. The effect should be verified using the proposed COB model, aluminum profile, diffuser, reflective surface and viewing distance before sample approval.
Is COB LED Strip Always Better Than SMD?
No. COB is often preferred when a project prioritizes a more continuous visible light line. SMD LED strip may be the better fit when the project requires a particular packaged LED, a validated efficacy target, a specific optical layout, legacy fixture compatibility or certification tied to an existing SMD model. Compare both platforms against the same project specification before sampling.
Next, compare Xmart COB platforms by light type, control method and project requirement.
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
Mono COB LED strip provides fixed-white or solid-color output with a continuous optical surface. It is commonly evaluated for profiles, cabinetry, displays and architectural details where visible LED spacing needs to be reduced.
- 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
Tunable White COB LED strip combines two white channels to adjust color temperature through a compatible controller. The available CCT pair, voltage, PCB width, wiring and control method vary by model.
- 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: Warm-white and cool-white CCT during color mixing.
RGB COB LED Strip
RGB COB LED strip combines red, green and blue channels for dynamic color applications. Controller compatibility, color-mixing appearance, PCB width and channel layout must be confirmed using the selected model.
- 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
RGBW COB LED strip combines RGB channels with a dedicated white channel for projects requiring both dynamic color and functional white light. The white CCT, CRI, controller and wiring must be confirmed by model.
- 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
RGBCCT COB LED strip combines red, green, blue, warm-white and cool-white channels for projects requiring dynamic color together with adjustable white light. Voltage, channel layout, PCB width, CCT combination, controller compatibility and color-mixing performance must be confirmed by model.
- 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
RGB-SPI COB LED strip uses integrated control ICs to create addressable lighting effects. Addressable segment length, IC type, communication protocol, pixel quantity, voltage and data direction vary by model.
- 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
48V COB LED strip platforms are intended for longer-run projects where lower current can help reduce voltage drop compared with an equivalent lower-voltage configuration. Maximum feed length depends on power, PCB construction, acceptable end-of-run performance, installation temperature and power-feed method.
- 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?
COB LED strip can be cut only at the marked cut points. Reconnection may use compatible solderless connectors or soldered lead wires, depending on PCB width, pad layout, channel count and IP construction.
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.
-
Precision Cutting: Standard increments usually at 50mm for 24V, and 25mm for 12V systems.
-
Reusability: Cut segments can be fully reused.
-
Optimal Connection: Soldering directly to the exposed copper pads remains the most reliable and permanent connection method.
Rigorous Product Testing
Inspection items are defined according to the selected model and approved requirements. Relevant checks may include electrical operation, visual appearance, photometric performance, aging and sealing construction.
Global Certifications
UL or ETL documentation is available for selected Xmart COB LED strip models and configurations. Provide the required COB type, voltage, PCB width, IP construction and intended application so Xmart can confirm the covered model, certification holder, file reference and marking requirements.
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.
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
Typical COB LED Strip Wiring Architectures
These diagrams illustrate general system concepts. Exact voltage, polarity, pin order, channel layout, controller protocol and connected load must match the selected COB model.
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
Everything you need to know about our advanced COB LED technology, installation, and specifications.
Which COB LED strip type should I use for my project?
What COB LED strip specifications can Xmart customize?
Which COB LED strip models have UL or ETL certificate?
Can Xmart manufacture COB LED strips in Vietnam?
What color options are available?
Are free samples available?
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.