RGBCCT COB LED Strip Lights - 24V 840LEDs/m 12mm 5-in-1 Full Color & Tunable White

1. Product Overview — 840 LEDs/m Seamless Dot-Free RGBCCT COB Light Line

The RGBCCT COB LED Strip Light is our flagship ultra-high-density linear light, packing 840 LEDs per meter into a 12mm white PCB. The chip-on-board (COB) architecture places RGB + dual-white (warm & cool) dies side by side under a continuous phosphor coating, so the emitting surface behaves like a single solid luminous band — no visible pixels, no dot points, no gaps at any viewing angle.

At 840 LEDs/m the center-to-center pitch of adjacent chips is only ~1.19mm, far below the human eye threshold for point-source perception at normal viewing distances. The light merges into a physically seamless ribbon: reflections on aluminum channels, coves and cabinet edges are perfectly uniform, with zero hotspot artifacts even in 180° wide-beam direct view. This is the closest a flexible strip can get to the look of a rigid LED linear profile.

• RGBCCT 5-in-1 chip — R / G / B + warm white + cool white dies, driven independently for full color and tunable white

• 840 LEDs/m ultra-high density — 1.19mm chip pitch, physically seamless light surface

• DC24V safe low-voltage system — consistent brightness along the full reel, easy driver sizing

• 25W/m continuous power — high output with a wide thermal safety margin

• 12mm white PCB — wider thermal path and better reflection than 8mm/10mm designs

• Cut every 41.6mm — 6 solder pads per segment for precise project sizing

• IP20 / IP65 / IP67 / IP68 — indoor bare to fully waterproof options

2. Technical Specifications — Exact Numbers You Can Plan With

3. Core Features — RGB + Tunable White in One Continuous Line

The 5-in-1 chip carries red, green, blue, warm-white and cool-white dies in one package. Because white is delivered by two real white dies — not by R+G+B mixing — you get true tunable white from 2700K (warm candlelight) to 6500K (crisp daylight), plus full RGB color, all from the same seamless light line.

• RGB + Tunable White 2700K-6500K — warm, neutral or daylight white at the touch of a controller, or 16 million saturated colors

• Dot-free COB optics — continuous phosphor coating with 1.19mm chip pitch; zero pixelation, zero hotspots, even photographed close-up

• 6 solder pads (+ / C / W / R / G / B) — one dedicated pad per channel means independent control of color and both white temperatures

• 5-channel independent dimming — 0-100% smooth per-channel control for custom scenes

• High CRI white — CRI > 90 for true-to-life color rendering in retail, hospitality and residential projects

• Consistent chromaticity along the reel — binned chips and a stable DC24V feed for uniform color

Dynamic modes — rainbow flow, breathing, chase, music sync and human-centric white tuning — run with buttery transitions because the tight 1.19mm chip pitch prevents any perceived stepping between adjacent dies. The strip reads as one continuous light source, exactly the premium effect architects expect from a COB product.

4. Thermal Engineering — 25W/m Managed by the 12mm PCB

Power density is the real test of a COB strip. At 25W/m the dies generate meaningful heat, and how that heat leaves the strip decides both brightness stability and lifetime. The 12mm white PCB is not cosmetic — it is a heat-management decision.

• Wider copper pour — the 12mm substrate carries thicker and wider copper traces, lowering series resistance and spreading die heat laterally before it reaches the adhesive layer

• Lateral heat spreading — a 12mm board gives roughly 50% more copper area than a 10mm board at the same thickness, flattening the temperature gradient across each cut segment

• Lower trace temperature rise — wider traces mean less resistive heating in the copper itself, so the strip runs cooler at identical wattage

• Aluminum channel compatibility — the 12mm width seats firmly in 12mm+ extrusion slots; the channel acts as a passive heat sink, keeping junction temperature inside the safe window for the >50,000h rated life

• White solder mask + reflective layer — the white surface reflects light upward (higher perceived brightness) and radiates heat more evenly than dark PCBs

Practical thermal budget: a bare IP20 strip on a clean surface in still air at 25°C runs within spec. For continuous full-brightness operation longer than 3m, mount into an aluminum channel or use thermal tape — this keeps the copper trace temperature below the recommended ceiling and the phosphor coating free of premature yellowing.

5. Wiring & Connection Guide — 6 Solder Pads Explained

Each cut segment carries 6 solder pads: +DC24V, C (cool white), W (warm white), R, G, B. The dual-white pads are what separate RGBCCT from plain RGB wiring — everything else follows the same logic:

• Power supply — use a DC24V constant-voltage driver sized at length (m) × 25W/m + 20% headroom. Example: 5m × 25W = 125W → 150W driver; 10m → 300W driver.

• Controller — a 5-channel RGBCCT controller (or RGB controller + dual-white dimmer). Connect the driver V+/V- to the controller power input.

• Strip wiring (6-wire) — map the pads in order: black = +DC24V, purple/cyan = C, white = W, red = R, green = G, blue = B. Solder or use a 6-pin quick connector. Polarity errors are the #1 cause of dead strips — double check before power-on.

• Cutting — cut only at the marked 41.6mm scissors line; every segment is a complete 6-pad working unit. When removing a segment, seal the fresh cut end with silicone for IP65+ versions.

• Mounting — peel the 3M adhesive and press into an aluminum channel or onto a clean, dry, degreased surface. For coves, clip the strip in place so the 25W/m heat can transfer to the channel.

Voltage drop control: at 25W/m a 5m reel approaches the current limit of standard PCB traces. For runs above 5m, inject 24V at both ends (parallel feed) or use 18AWG supply leads every 5m so the far end stays at full brightness and color accuracy.

6. Protection Options — IP20 / IP65 / IP67 / IP68

One product family, four protection grades — pick the one that matches your environment:

• IP20 (bare) — open PCB for indoor dry locations: furniture, coves, display cases, backlighting

• IP65 (silicone-coated) — a clear silicone layer over the PCB: kitchens, bathrooms, splash-zone retail

• IP67 (silicone tube) — fully enclosed extruded tube: wet zones, outdoor under-eave, signage

• IP68 (fully potted) — total encapsulation: submersible features, fountains, outdoor exposed runs

All IP versions share the same 12mm width, 840 LEDs/m density and 25W/m electrical specification, so your driver and controller selection stays identical across grades.

7. Technical FAQ — Deep Answers From Our Engineers

Q1. What makes 840 LEDs/m look seamless, physically?

A1. Adjacent chips sit roughly 1.19mm apart (1000mm ÷ 840). Human point-source resolution at 300-500mm viewing distance is around 1-2mm of angular separation, and the continuous phosphor coating additionally diffuses each die. The result: the emitting surface is perceived as a solid, dot-free light band with no measurable luminance dip between chips.

Q2. Why RGBCCT instead of a standard RGB strip?

A2. RGBCCT adds two real white dies (warm + cool) on top of RGB. You get true tunable white from 2700K to 6500K with CRI > 90 — not the pinkish, low-CRI fake white that R+G+B mixing produces. One strip becomes a color fixture, an ambient tunable-white fixture and a task light at the same time.

Q3. How does tunable white 2700K-6500K actually work?

A3. The C (cool white) and W (warm white) channels are driven independently by the 5-channel controller. By balancing their intensities you can dial in any correlated color temperature between 2700K and 6500K — warm candlelight for hospitality, neutral 4000K for offices, cool daylight for retail.

Q4. How much power do I really need?

A4. 25W/m at full brightness. A 5m reel draws 125W; add 20% headroom → a 150W DC24V driver. If you run only white or only color, real draw is lower, but size the driver for the worst case (all channels on).

Q5. Why is the PCB 12mm wide and what does it change?

A5. The 12mm substrate carries wider copper traces and roughly 50% more copper area than 10mm designs. That lowers electrical resistance, reduces trace heating, spreads die heat laterally and seats securely in standard 12mm+ aluminum channels. At 25W/m this is the difference between a stable 50,000h strip and an overheated one.

Q6. Where and how do I cut it?

A6. Cut only at the marked 41.6mm scissors lines. Each unit is a complete 6-pad segment (+, C, W, R, G, B). Cutting at any other point breaks the circuit. For IP65+ versions, reseal the cut end with silicone before installation.

Q7. Which IP rating should I choose?

A7. IP20 bare for indoor dry coves and furniture; IP65 silicone-coated for kitchens and areas with occasional splash; IP67 silicone-tube for wet zones and outdoor under-eave; IP68 fully potted for submersible or outdoor exposed runs. Confirm the option with your sales engineer before ordering.

Q8. How does the 6-wire connection work and what if I mix channels?

A8. Six pads carry +DC24V, C, W, R, G, B. Follow the color convention (black=+, purple/cyan=C, white=W, red=R, green=G, blue=B). Swapping R/G/B only changes color order on the controller; connecting C or W to V+ or GND will burn the white dies or the driver — always verify polarity with a multimeter before power-on.

Q9. Can it dim and which controllers work?

A9. Yes — 0-100% smooth dimming per channel. Use any 5-channel RGBCCT controller rated for DC24V and your total current: RF remote, WiFi (Tuya / Home Assistant), 0-10V, or DMX512 via decoder for stage and architectural zone control.

Q10. Can I run multiple reels and how do I prevent voltage drop?

A10. Yes, within the driver/controller current limit. Beyond 5m, feed 24V at both ends or every 5m with 18AWG leads wired in parallel from the driver. This keeps the far-end LEDs at full brightness and color-consistent — crucial at 25W/m density.

Q11. What is the real thermal limit for continuous operation?

A11. Bare IP20 in still air: keep the total run under ~3m at full brightness, or mount into an aluminum channel for passive cooling. The 12mm PCB plus channel keeps trace temperature within the safe window for the rated >50,000h lifetime. Never coil a powered strip tightly — it traps heat.

Q12. What are the MOQ and lead time?

A12. MOQ: 1 reel for samples, 50 reels for bulk. Lead time 3-5 days for stock, 7-15 days for custom lengths, waterproofing or OEM branding. Our engineers reply within 24 hours with driver sizing and channel recommendations.

Still have a question? Send us your project length, mounting surface, environment (indoor/outdoor), CCT preference and control system — we will recommend the exact SKU, IP grade, driver wattage and accessories.

8. Why Buy Direct From Our Factory

We are a dedicated LED strip manufacturer with more than a decade of COB production experience. Every reel of this RGBCCT 840 LEDs/m series is 100% tested before packing: polarity check, per-channel brightness check, color consistency check and solder-pad inspection. Each batch passes a 72-hour aging test so the strip performs exactly as specified at 25W/m.

Wholesale and project buyers get free sample evaluation, custom length cutting, custom connectors, OEM/ODM branding, four IP options and engineering support from order to installation. We size the driver, recommend the aluminum channel profile and deliver a complete, wiring-sheet-documented solution — your electrician finishes the job without guesswork.

Popular lengths and IP versions are held in stock for 24-48 hour dispatch on urgent projects.