COB LED Lights
Chip on Board Technology — Seamless Light, Zero Dark Spots, Ultra-High CRI for Every Lighting Application
What Is COB LED Technology?
COB — Chip on Board — is an advanced LED manufacturing technique where dozens of individual LED chips are mounted directly onto a single ceramic or aluminium substrate, electrically connected, and encapsulated together under a single phosphor layer. The result is a single, large, luminous surface that behaves like a miniature, ultra-efficient light source.
The COB Advantage — Why It Outperforms
Four fundamental reasons why COB LED is the technology of choice for quality-first lighting projects.
Seamless Light Surface
All chips share one phosphor layer, creating a single homogeneous emitting surface. No visible LED dots, no striping effect on walls or ceilings — just smooth, even light.
Superior Color Accuracy
COB architecture allows tighter bin-matching of chips, yielding consistent color temperatures and CRI values above 90 Ra — with premium modules achieving >97 Ra, close to natural daylight.
Efficient Heat Dissipation
Direct substrate mounting reduces thermal resistance. Heat is conducted away from chips faster, lowering junction temperature and extending LED lifespan beyond 50,000 hours.
Higher Lumen Density
Packing multiple chips into a small footprint creates extreme lumen density — making it possible to achieve 3,000+ lumens from a 30mm diameter module. Ideal for tight-aperture spotlights.
COB LED vs. SMD LED
Understanding where each technology excels helps specify the right solution for each lighting challenge.
🟡 COB LED — When Quality Matters
- Single uniform emitting surface — no visible dots or pixelation
- CRI up to 97+ Ra — true-to-life color reproduction
- Superior lumen density in compact modules
- Lower operating temperature = longer life
- Precise optical control with add-on lenses (15°–120°)
- Ideal for spotlights, downlights, retail, galleries, hospitality
- Flicker-free dimming to 1% with COB drivers
- 50,000 hour rated life at L70
⬜ SMD LED — Where It Has Its Place
- Individual chips visible at close range in strip lighting
- Standard CRI typically 80 Ra (premium ≤90 Ra)
- Better for RGB/RGBW color mixing applications
- Flexible strip form factor for curved surfaces
- More cost-effective for linear wash lighting
- Ideal for cove lights, backlighting, color-changing effects
- Wider product availability across wattage ranges
- Standard 30,000–40,000 hour lifespan
Nucleo COB LED Range
From compact jewellery accent modules to high-power architectural floodlights — every COB application covered.
COB Accent / Jewellery Module
Ultra-compact high-CRI (>97 Ra) COB for display cases, jewellery showcases, optical cabinets, and art galleries. Tight 15°–24° beams with perfect color rendering.
COB Recessed Downlight
Slim IC-rated COB downlight for residential and commercial ceilings. Available in fixed and adjustable tilt versions. Multiple aperture sizes (65mm–120mm cut-out).
COB Spotlight / Track Light
Directional COB spotlight for track systems and surface mount. Interchangeable optic lenses (15°/24°/36°/60°) for precise accent and retail display lighting.
COB LED Strip (360° Filament)
Continuous filament-style COB strip with no visible dots even at 5cm viewing distance. 480 chips/metre. Ideal for cove lights, shelf edges, and profile channels.
COB LED Panel
Flat panel with COB backplane for ultra-uniform surface luminance. Zero glare, no pixelation. For office lighting, healthcare facilities, and educational institutions.
High-Power COB Module
Industrial and outdoor COB modules for façade wash, floodlighting, sports areas, and warehouse lighting. IP65/IP67 rated. Paired with high-efficiency Mean Well or Nucleo drivers.
Why Specify Nucleo COB LEDs?
Built for quality-conscious lighting professionals who refuse to compromise on light output, accuracy, or longevity.
True Color Rendering
CRI >90 standard, >97 Ra on premium range. Colors appear exactly as they do in natural daylight — critical for retail, hospitality, and art environments.
Up to 140 lm/W Efficacy
Industry-leading lumens per watt ratio. Achieve more light output with less power — directly reducing energy bills on large commercial installations.
50,000 Hour Lifespan
Rated L70 at 50,000 hours. Premium chip packaging and thermal management deliver consistent performance across the full rated life without colour shift.
Flicker-Free Operation
Zero flicker (SVM <0.4) at all dim levels. Safe for offices, hospitals, schools, and broadcast studios where flicker-induced eye strain is a concern.
Dimmable to 1%
TRIAC, 0-10V, and DALI dimming compatibility. Smooth, linear dimming curve from 100% to 1% with no flicker, pop, or drop-out at low levels.
Pan India Project Support
Nucleo provides lighting layouts, photometric data (IES files), project sampling, and bulk pricing for architectural, retail, hospitality, and industrial projects nationwide.
Technical Features
Engineered for demanding professional lighting applications with consistent batch-to-batch quality.
📐 Tight SDCM Binning
SDCM <3 MacAdam ellipse binning. Consistent colour temperature across all units in a project — no visible variation between fixtures on the same installation.
🔆 R9 >50 Red Rendering
Strong R9 red saturation index — critical for skin tone, food, fabric, and jewellery colour accuracy. Premium COB models achieve R9 >90.
🛡️ Surge Protection
Built-in 4kV surge protection on driver-integrated COB fixtures. Guards against voltage spikes common in Indian power distribution networks.
🌡️ Wide CCT Range
Available in 2700K (warm), 3000K, 3500K, 4000K (neutral), 5000K, and 6500K (daylight) — all with tight ±200K tolerance per batch.
🔦 Precision Optics
Compatible with clip-on TIR (Total Internal Reflection) lens accessories for beam control. Swap 15° to 60° lenses on-site without tools on select models.
📋 IES Files Available
Full photometric data (IES/LDT files) available for all Nucleo COB fixtures — enabling DIALux and Relux lighting simulations for project documentation.
Technical Specifications
Standard COB LED module range specifications (fixture-specific data sheets available on request).
| Specification | Value |
|---|---|
| Technology | Chip on Board (COB) — Multi-Chip Single Substrate |
| Wattage Range | 3W / 5W / 7W / 10W / 15W / 20W / 30W / 50W / 100W / 200W |
| Luminous Efficacy | Up to 140 lm/W (premium models) |
| CRI (Standard) | >80 Ra |
| CRI (High) | >90 Ra |
| CRI (Ultra-High) | >97 Ra (R9 >90) |
| Color Temperature | 2700K / 3000K / 3500K / 4000K / 5000K / 6500K |
| SDCM Binning | <3 MacAdam Ellipse |
| Beam Angle Options | 15° / 24° / 36° / 60° / 120° (lens dependent) |
| Operating Voltage | 12V DC / 24V DC / 220V AC (fixture dependent) |
| Dimming | TRIAC / 0-10V / DALI (driver dependent) |
| Flicker | <0.4 SVM (flicker-free per IEEE 1789) |
| IP Rating | IP20 (indoor) / IP65 / IP67 (outdoor models) |
| Operating Temperature | –20°C to +45°C |
| Lifespan | 50,000 hours at L70 (TM-21) |
| Warranty | 2 Year (Nucleo Standard) |
Where COB LED Lights Perform Best
COB LED's superior light quality makes it the specification of choice across luxury and professional environments.
Jewellery Showrooms
Ultra-high CRI (>97) COB spotlights that make gold, diamonds, and gemstones sparkle with true, accurate colour.
Hotels & Resorts
Warm-white COB downlights and spotlights for lobby, suite, restaurant, and spa environments demanding premium ambiance.
Retail & Fashion
Adjustable COB track spotlights for garment, shoe, and lifestyle retail — CRI >90 preserves true fabric colours and product appeal.
Galleries & Museums
UV-free, high-CRI COB accent lighting for artwork, exhibits, and artefacts. Zero risk of pigment degradation from UV exposure.
Healthcare Facilities
Flicker-free, high-CRI COB panels for hospitals, clinics, and diagnostic rooms where accurate visual assessment is essential.
Luxury Residences
Dimmable COB downlights and cove strips for premium villas, penthouses, and architect-designed homes requiring bespoke lighting.
Restaurants & Cafés
COB spotlights on dining tables enhance food presentation and create warm, inviting atmospheres that encourage guests to linger.
Architectural Façades
High-power IP67 COB floodlights for building exterior washing, monument uplighting, and landscape feature illumination.
Installation Guide
Professional installation guidance for Nucleo COB LED fixtures across the two most common configurations.
⬇️ COB Recessed Downlight Install
- Mark the cut-out position on the ceiling using the template provided (typical sizes: 65mm, 75mm, 90mm, or 120mm diameter). Ensure at least 150mm of plenum depth above the fixture.
- Cut the aperture using a hole saw. Verify that no structural members, conduit, or plumbing obstruct the path above.
- Connect the driver output wires to the COB module connections inside the fixture housing. Observe polarity markings.
- Connect the driver input to the 220V AC supply through a ceiling rose or junction box — ensure power is OFF at the MCB before connecting mains.
- Insert the driver into the plenum above the ceiling. Push the COB fixture body up through the aperture — spring clips engage automatically and hold flush against the ceiling.
- Restore power. Commission the dimmer (if fitted) and verify smooth 0–100% dimming performance. Adjust beam angle lens if alternate optic is required.
🎯 COB Track Spotlight Install
- Install the track rail using the mounting brackets supplied. For single-circuit track, connect L, N, and Earth at the live end cap. Ensure the track is correctly rated for total connected load.
- Slide the COB track adapter into the track channel. Rotate 90° clockwise to lock the electrical contacts and secure the fixture mechanically.
- Aim the spotlight head to the desired target position. Tighten the horizontal swivel and vertical tilt locking screws to maintain the angle.
- To change the beam optic: unclip the anti-glare shield, swap the TIR lens insert (15°/24°/36°/60°), and reattach the shield.
- Power on the track circuit. Verify the COB lamp ignites without flicker. Allow 5 minutes of warm-up before making final aiming adjustments.
- For multi-fixture track systems, balance load evenly across both sides of the live end feed. Do not exceed the track's rated amperage.
💡 Light That Does Justice to What It Illuminates
The purpose of lighting is not simply to make a space visible — it is to make it look its best. In jewellery, a diamond should fire with every facet alive. In a restaurant, food should look as delicious as it tastes. In a clothing store, a red dress should look red — not orange-red, not pink-red, but exactly red. COB LED technology, with its superior CRI and seamless beam quality, is the engineering answer to these demands.
Nucleo's COB LED range is built on the conviction that high-quality light is not a luxury — it is a specification requirement. We supply the same chip packages used in premium European and Japanese luminaire brands, assembled and tested in India, available at project-viable pricing for the Indian market. From a single downlight replacement to a 500-fixture hospitality project, our lighting team provides full technical support at every stage.
Frequently Asked Questions
Professional and consumer answers about COB LED lighting technology and Nucleo's product range.
What is the difference between COB LED and SMD LED?
What CRI do Nucleo COB LEDs offer?
Are COB LED lights dimmable?
Can COB LEDs be used outdoors?
What beam angles are available for COB LED spotlights?
What is the lifespan of a COB LED module?
What wattages are available?
Where can I buy COB LED lights Pan India?
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