COB LED Strip · Shenzhen Factory
COB LED Strip Lights for Dotless Linear Projects
Continuous-phosphor COB LED strip in 320 to 840 LEDs/m, 8mm to 12mm widths, CRI 90, in single colour, RGB, RGBW, RGBCW and addressable RGBIC — built for cove, joinery and architectural detail where visible dots are not acceptable.
- LED density
- 320–840 /m
- Strip width
- 8–12 mm
- Colour rendering
- CRI 90
- DC voltage
- 12V / 24V
Definition
What a COB LED strip actually is
COB means chip-on-board: bare LED dies bonded straight onto the flexible PCB under one continuous phosphor layer, so the emitting surface is a line instead of a row of points. That is the whole reason it gets specified where the source is visible. Full construction and binning detail is in what is a COB LED strip.
Note that some products marketed as COB are closely pitched SMD emitters under a heavy diffuser. They look similar when new, but the lens can yellow and the dots reappear as it ages — which is often why two apparently identical specifications quote differently. Side-by-side comparison: COB vs SMD LED strip.
Zone Selector: What to Specify Where
Apartment cove & ceiling
Warm dot-free, dim to 1%.
COB 480 LED/m · 2700K · CRI 95+Kitchen under-cabinet
Task light, high CRI for food prep.
SMD 2835 4000K · CRI 90+ · 24VBathroom mirror & vanity
Tunable, flicker-free for skin tone.
COB TW 2700–5000K · IP44 · dimmableWardrobe & walk-in closet
PIR-activated, slim profile.
COB 320 LED/m · slim 6mm profile · PIRStaircase & step lighting
Safety, low-glare, motion-triggered.
SMD in step-edge profile · PIR · 3000KLobby & concierge
Premium ambient, tunable for time-of-day.
COB TW · DALI / KNX · CRI 95+Lift lobby & corridor
Long uniform linear runs.
SMD 2835 · 48V long-run · DALIBalcony, terrace & pool
Outdoor IP65/IP68, weather-sealed.
Strip in IP65 profile or IP68 Neon FlexProducts: COB · SMD · Neon Flex · Drivers & Profiles
Matching products
Representative COB SKUs
All Senfey products
ES-COB-480-24V-8MM
COB LED Strip 480LEDs/m 8mm 24V Single Color
- Voltage
- 12V / 24V
- Rating
- IP20
- CRI
- 90
ES-COB-528-10MM-24V
COB LED Strip 528LEDs/m 10mm 24V Single Color
- Voltage
- 24V
- Rating
- IP20
- CRI
- 90
ES-COB-840-10MM-24V-RGB
RGB COB LED Strip 840LEDs/m 10mm 24V
- Voltage
- 24V
- Rating
- IP20
- CRI
- 90
ES-COB-720-12MM-RGBIC
RGB IC Addressable COB LED Strip 720LEDs/m 12mm
- Voltage
- 12V / 24V
- Rating
- IP20
- CRI
- 90
Single-colour SKUs are also available at 320 LEDs/m in 8mm (ES-COB-320-8MM-12V), and the colour range extends to RGBW and RGBCW at 12mm (ES-COB-840-12MM-24V-RGBCW). Selection normally starts from channel width and required output — the best COB LED strip lights guide walks through that decision for project work.
Applications & projects
Where COB strip is specified
Published Senfey project pages. Locations and reference codes are as recorded in our project register.
Hospitality · Valencia, Spain
Hotel cove lighting with 24V COB LED strip
Lobby, corridor and guest room cove detail using warm white high-CRI COB strip.
Office · Manchester, United Kingdom
Commercial office ceiling COB LED strip
Linear ceiling and indirect office lighting on a 24V long-run driver layout.
Gallery · Bologna, Italy
Museum gallery lighting with high CRI COB strip
Artwork and showcase lighting where colour fidelity and glare control govern selection.
Facade · Rotterdam, Netherlands
Outdoor facade lighting with waterproof COB strip
Building outline and exterior linear detail with sealed, IP-rated construction.
Spa · Aarhus, Denmark
Bathroom and spa waterproof COB LED strip
Niche and wet-area detail where sealing method and safety voltage lead the spec.
Joinery · Porto, Portugal
Custom cabinet lighting with narrow COB strip
Kitchen, wardrobe and furniture grooves where strip width and cut interval decide fit.
Sector solution pages
Where the brief is a building rather than a product, our application pages cover the specification logic per sector — illuminance targets, colour temperature strategy, maintenance access and compliance: hotel LED lighting, commercial LED lighting, architectural lighting, bars and entertainment venues, residential developments and landscape and parks.
Residential and cabinet-scale work has its own constraints — shallow grooves, visible terminations and short driver runs. Those are covered in home decor and cabinet COB lighting. The full published project register is at Senfey project cases.
Installation & control
Cutting, wiring, dimming
The four topics that generate the most pre-order questions from contractors and fit-out teams.
Cutting and bending
Cut marks, minimum bend radius and how to avoid damaging the phosphor layer or copper pads.
Cut and bend COB LED stripInstalling and wiring
Surface preparation, extrusion mounting, polarity and feed strategy for continuous runs.
Install and connect COB stripsConnectors and drivers
Solder versus clip joints, driver sizing headroom and voltage drop over long runs.
COB strip connectors and power supplyDimming and control
PWM behaviour, controller matching and avoiding low-end flicker in scene systems.
Dimmable COB LED stripTwo failure modes account for most site problems, and both are avoidable at design stage. The first is voltage drop on an over-long single feed: the far end of the run reads visibly dimmer and slightly warmer than the near end, which is obvious on a continuous cove because the eye has the whole line to compare against. The fix is injecting power at intervals or splitting the run across drivers, decided from the drawing rather than discovered during commissioning.
The second is thermal. A COB strip stuck to plasterboard or timber with no heat path will run hotter than the same strip in an aluminium extrusion, and sustained high junction temperature is what shortens life and shifts colour. The extrusion is part of the specification, not an accessory — this matters more at 528 and 840 LEDs/m, where current per metre is highest.
Compatible control hardware is stocked alongside the strip — single-colour dimming via ES-LC-DIM-015 or the 30A ES-LC-DIM-008 for heavier loads, and RGB control via ES-LC-RGB-016. Match the controller to the strip's current draw with headroom rather than to its nominal rating.
Comparison
COB against the alternatives
COB is not automatically the right answer. This is where each technology wins.
| Criterion | COB strip | SMD strip | LED neon flex | Addressable strip |
|---|---|---|---|---|
| Light appearance | Continuous dotless line | Discrete points, needs diffusion | Even glowing tube or side profile | Point-based, per-pixel control |
| Best mounting | Shallow or open channel | Deeper channel with frosted lens | Surface mount, exposed runs | Channel or exposed effect runs |
| Bending | Flexible along its axis | Flexible along its axis | Bends to letters and curves | Flexible along its axis |
| Typical use | Cove, joinery, gallery, corridor | General purpose, budget-led runs | Signage, facade outline, exterior | Media walls, dynamic scenes |
| Detail guide | COB vs regular LED strip | COB vs SMD LED strip | COB strip vs neon flex | addressable LED strip |
In short: specify COB when the light source is visible or semi-visible and a uniform line is part of the design intent. Specify SMD LED strip lights when the strip is fully concealed behind a deep lens and cost per metre dominates. Specify LED neon flex for exposed exterior outlines, lettering and signage where the strip itself is the visible object. Specify addressable product when individual segments need independent colour or animation.
Cost comparisons between these options are frequently misleading, because they are made per metre of strip rather than per metre of installed light. A cheaper SMD tape that needs a deeper extrusion and a heavier diffuser can cost more once the profile is priced in, and it delivers fewer lumens to the surface because the diffuser absorbs them. The reverse also holds: if the strip is fully hidden inside a plasterboard pelmet and nobody will ever see the source, paying for dotless output is spending money on a property the project cannot use. The useful comparison is delivered light and total installed cost for the detail actually being built.
Sourcing & factory
Buying COB strip from the factory
Senfey manufactures LED strip in Shenzhen and supplies contractors, lighting designers and distributors directly. For project work that usually means three things matter more than headline price: whether the binning is consistent across a repeat order, whether documentation supports the specification, and whether the same SKU is still available for a phase-two extension.
Density, width, colour temperature, CRI target, IP construction and reel length are all configurable, and OEM and private-label work is supported. If you are assessing suppliers, how to evaluate a COB LED strip manufacturer sets out what to audit; commercial terms and volume structure are covered in COB LED strip wholesale price.
Distributors and importers can request a mixed sample set across densities and colour types to evaluate before committing to a stocking order. Send the channel dimension, run length, mounting height and target colour temperature and we will come back with a configuration and a quotation, or reach us via our contact page. More about the factory is on about Senfey.
Request a quote or samples
Include your channel width, total run length and target colour temperature — it lets us quote a real configuration instead of a generic price list.
Prefer email or a message app? Use our contact page.
FAQ