Collection: COB LED Strip Lights 24V & 48V

COB LED strip lights represent the latest generation of LED tape technology, delivering a seamless, dot-free line of continuous light that standard SMD strips simply cannot match. Unlike traditional LED strips where individual diodes are visible, COB (Chip-on-Board) strips pack hundreds of LED chips directly onto a single continuous substrate, producing a uniform, glare-free glow that looks clean and professional in any installation.

At ATOM LED, we stock COB LED strips in both 24V and 48V configurations — giving homeowners, interior designers, and lighting professionals the flexibility to choose the right voltage for their specific project requirements.

What Makes COB LED Strips Different?

COB LED strips use a dense chip-on-board design where the phosphor layer is applied directly over a linear array of LED chips. This eliminates the hot-spot effect and produces a smooth, continuous beam of light with no visible dots or shadows — even when viewed through diffused profiles or at close range. The result is a premium finish that suits everything from kitchen under-cabinet lighting to high-end architectural installations.

Key characteristics of COB LED strips include:

• Dot-free, seamless illumination with no individual LED chips visible
• High CRI (Colour Rendering Index) of 90+, ensuring colours appear true and natural under the light
• Consistent colour temperature across the full length of the strip
• Flexible substrate for installation in straight runs, curves, and recessed aluminium profiles
• Available in warm white, natural white, cool white, and variable CCT options

24V vs 48V COB LED Strips — Which Should You Choose?

The voltage of your COB LED strip affects how long a continuous run you can achieve without experiencing voltage drop — the gradual dimming that occurs as current travels further along the strip.

24V COB LED strips are the most widely compatible option. They work with the broadest range of LED drivers, dimmers, and controllers available on the market. ATOM LED 24V COB strips support single-feed continuous runs of up to 20 metres — well above the industry standard — making them ideal for residential installations, under-cabinet lighting, shelf lighting, staircase lighting, and mid-size commercial projects.

48V COB LED strips are engineered for maximum run length and large-scale installations. With 48V, a single continuous run of up to 30 metres is achievable from one feed point with zero voltage drop or dimming at the far end — making them the preferred choice for commercial spaces, long corridor lighting, open-plan living areas, and professional installations where consistency across the entire run is critical.

24V COB LED Strip is also available with our FreeCut technology, with continuous run up to 10 metres with one side power allowing strips to be cut at frequent intervals to fit your exact dimensions without waste.

Why Choose ATOM LED for COB LED Strips?

We supply commercial and industrial-grade COB LED strips directly to homeowners, tradespeople, and businesses across the UK. Every strip in our range is tested to meet rigorous performance and safety standards, with full IP rating options available for bathroom, outdoor, and wet area installations.

Our COB LED strips are compatible with a wide range of Triac, DALI, and 0-10V dimmable LED drivers, and our technical team is available to help you spec the right driver, profile, and accessories for your installation.

Free UK delivery is available on qualifying orders, and all products come with a 5-year warranty for complete peace of mind.

Frequently Asked Questions — COB LED Strip Lights

What does COB stand for in LED strips?

COB stands for Chip-on-Board — a technology where multiple LED chips are mounted directly onto a circuit board and covered with a phosphor layer, creating a seamless, continuous line of light with no visible dots or hot spots.

More detail: Unlike SMD strips where each diode is individually encapsulated and spaced apart, COB strips have hundreds of chips packed side by side under a single continuous phosphor coating. This produces a smooth, uniform glow that is visually superior in any installation where the strip or its reflection is visible.

Are COB LED strips better than SMD LED strips?

For most applications, yes. COB strips produce smoother, dot-free light with no hot spots, a higher CRI of 90+, and a wider 180-degree beam angle. They are the superior choice wherever light quality and aesthetics matter.

More detail: SMD strips remain practical for colour-changing RGB lighting, as COB RGB strips are less widely available. But for white light — kitchens, bathrooms, retail displays, architectural coves — COB is the modern standard. Near reflective surfaces like gloss cabinets or mirrors, the difference between COB and SMD is immediately and clearly visible.

Are COB LED strips dimmable?

Yes. All ATOM LED COB strips are fully dimmable with a compatible LED driver. Supported methods include Triac (works with most standard wall dimmers), DALI, 0-10V, and PWM.

More detail: The key is matching your dimmer and driver to the same protocol. Triac is the simplest for home use. DALI and 0-10V are preferred for commercial multi-zone installations requiring precise, flicker-free control. Always confirm your dimmer is LED-rated and compatible with your driver before purchasing.

Can COB LED strips be cut?

Yes. COB strips can be cut at the designated cut marks printed along the strip. ATOM LED strips feature FreeCut technology, allowing cuts as frequently as every few centimetres on select models.

More detail: Always cut only at the marked cut points — never through a chip area. After cutting, reconnect using solderless push-in connectors (easiest for DIY) or soldered wire for a permanent join. Always maintain correct polarity — positive to positive, negative to negative — when reconnecting sections.

Do COB LED strips need an aluminium profile?

Not strictly required, but strongly recommended. Aluminium profiles act as heatsinks, extending strip lifespan significantly. A frosted diffuser cover also softens the light for a cleaner, more professional finish.

More detail: Without a profile, COB strips can be installed directly on a clean dry surface using the built-in 3M adhesive. However, without a heatsink the strip runs hotter, reducing lifespan. For any permanent installation — especially in kitchens or commercial settings — an aluminium channel is considered industry best practice.

Do COB LED strips get hot? Are they safe?

COB LED strips are safe and warm to the touch during normal operation — not dangerously hot. They are rated to 50,000 hours and pose no fire risk when powered by a correctly rated driver.

More detail: The circuit board acts as a built-in heatsink, transferring heat away from the chips efficiently. An aluminium profile improves this further. COB strips operate at Safety Extra Low Voltage (24V or 48V DC) — no shock risk under normal use. The mains-side connection of your LED driver should always be carried out by a qualified electrician per UK Building Regulations Part P.

Can COB LED strips be used outdoors?

Yes, but only with the correct IP rating. IP65 is the minimum for outdoor or wet areas. IP67 is needed for direct rain exposure, and IP68 for submersion such as pool surrounds.

More detail: IP20 strips are for dry indoor use only and must never be installed in bathrooms or outdoors. For covered outdoor areas like soffits or pergolas, IP65 is sufficient. For exposed outdoor installations, IP67 or IP68 is recommended. Always use weatherproof connectors and conduit to protect wiring.

What wattage COB LED strip do I need?

Use 8–10W/m for accent and decorative lighting; 12–15W/m for under-cabinet and task lighting; 18–20W/m for bright commercial or functional lighting.

More detail: Higher wattage means more lumens per metre. For kitchen under-cabinet lighting where visibility matters, 12–15W/m producing around 1,200–1,500 lm/m is ideal. For bedroom cove or mood lighting, 8–10W/m is sufficient. Always size your driver to total strip wattage plus 20% headroom.

What driver do I need for my COB LED strip?

Multiply W/m by total strip length, then divide by 0.8 for minimum driver wattage. Match driver voltage to strip voltage — 24V strip needs a 24V driver, 48V strip needs a 48V driver.

More detail: Example: 6m of 12W/m = 72W ÷ 0.8 = 90W minimum — choose a 100W driver. The 20% headroom prevents the driver running at full load, extending its lifespan. For dimming, ensure both driver and wall dimmer use the same protocol: Triac, DALI, or 0-10V.

How do I connect COB LED strips?

Use solderless push-in connectors for quick DIY connection, or solder wire leads to the copper pads for a permanent join. Always connect positive to positive and negative to negative.

More detail: For multi-section runs, use strip-to-strip connectors or wire extensions. Solderless connectors clip onto cut ends in seconds with no tools. For commercial installations or high-vibration environments, soldering provides a more reliable, lower-resistance connection.