LED COB 28mm - 5W, Warm/Cool Light
Available in stock
| Quantity | Price per unit | You save |
|---|---|---|
| 1–2 pcs | 8,99 lei | — |
| 3–4 pcs | 8,54 lei | 5% (−0,45 lei/unit) |
| 5–10 pcs | 8,09 lei | 10% (−0,90 lei/unit) |
| 11+ pcs | 7,64 lei | 15% (−1,35 lei/unit) |
5W 28mm COB LED Chip with Warm or Cool Light
The 5W COB LED chip with a 28mm diameter is a compact and versatile light source, designed for professional lighting or DIY projects. The 2-in-1 module allows operation with cool white, warm white color temperatures, or both simultaneously, thus achieving neutral light. The aluminum substrate with mounting slots ensures efficient heat dissipation and a long lifespan.
What you get with this product
- Maximum flexibility in projects — the 2-in-1 chip operates independently on cool white, warm white, or combined for neutral light, without additional components
- High luminous flux for its small size — 500-550 lm at just 5W, with an efficiency of 100-110 lm/W, suitable for spotlights, floodlights, and light fixtures
- Lifespan of up to 20,000 hours — rare replacements and long-term savings
- The aluminum alloy substrate with radial slots dissipates heat evenly, protecting the chip and maintaining consistent performance
- Color rendering index Ra over 80 — colors are rendered correctly and naturally, useful in commercial, hospitality, or office lighting
- Compatible with a wide range of applications — recessed or surface-mounted spotlights, light boxes, car-moto lamps, floodlights, ambient or industrial lighting
How it works and how to install it
The COB LED chip is powered by 15-16V DC continuous voltage through a compatible driver, via the four power contacts (2 positive + 2 negative) marked on the metal substrate. Mounting is done by soldering or mechanical fastening on a heatsink, with the mandatory application of thermal paste between the chip and the cooling surface. It does not require special tools, but it is important to observe polarity and ensure proper cooling to avoid overheating.
Frequently asked questions
What driver do I need for this 5W COB LED chip?
A constant current source (LED driver) that provides 15-16V DC at a current of 280-300mA is required. It should not be connected directly to the mains or variable voltage sources.
Can I use the chip with only one color temperature, not both?
Yes, the 2-in-1 module allows independent powering of the cool white or warm white channel, depending on the contacts to which you connect the driver.
Is thermal paste mandatory for installation?
Yes, applying thermal paste between the chip and the heatsink is mandatory. Without it, the junction temperature rises rapidly and the chip's lifespan decreases significantly.
Technical specifications
| Model | LED-H28-2B5C2 |
| SKU | Q-20C056 |
| Type | 2-in-1 COB LED Chip |
| Power | 5W |
| Supply voltage | 15 - 16V DC |
| Operating current | 280 - 300mA |
| Color temperature | Cool White 6000-6500K / Warm White 2800-3200K |
| Luminous flux | 500 - 550 lm |
| Luminous efficiency | 100 - 110 lm/W |
| Color rendering index (CRI) | Ra over 80 |
| Chip diameter | 28 mm |
| Thickness | 1.8 mm |
| Substrate | Aluminum alloy with radial slots |
| Chip protection | Silicone gel |
| Power contacts | 4 (2 positive + 2 negative) |
| Lifespan | up to 20,000 hours |
Warranty and support
The product benefits from a 2-year legal warranty in accordance with current Romanian legislation. We accept returns within 30 days of receipt, without requiring justification. Delivery is carried out quickly by courier throughout Romania.
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