LumiBar-28-3090 Samsung LED Strip pure white CRI90 4000K 690lm 250mA 15V 24 LEDs 28cm module (2465lm/m 14W/m)

LumiBar-28-3090 Samsung Rigid LED Strip Pure White 4000K CRI90, Zhaga-Compatible 28 cm Module

The LumiBar-28-3090 is a rigid, high-efficiency LED module for the construction and retrofit of professional linear luminaires. Its 24 Samsung LEDs on a 28 cm circuit board deliver 690 lm (2465 lm per meter) at only 3.8 W, an efficacy of 182 lm/W, with a color rendering index of 90 and pure white 4000K light. This combination of very high efficacy and CRI90 light quality makes it ideal for energy-saving, compact and bright luminaires for shops, offices, commercial spaces and workplaces.

The LumiBar 3090 is available in three lengths, 14, 28 and 56 cm, which can be combined to fit the luminaire. Designed according to the Zhaga Book 7 standard, it has a 20 mm wide board with solderless push-in terminals, is operated with a constant current LED driver, and needs no additional heat sink. The short LED pitch produces uniform white light without light spots behind a diffuser, and binning to a 3-step MacAdam ellipse ensures consistent pure white light. The 4000K light color creates a clean, focused pure white light that supports concentration and alertness. The LumiBar is made in Germany and backed by a 5-year warranty.

Features of the LumiBar-28-3090 LED Strip 4000K

• 24 high-performance Samsung LEDs on a rigid 28 cm module
• Pure White 4000K with CRI90
• 690 lm per module, 2465 lm per meter
• Very high efficacy of 182 lm/W at a realistic junction temperature of 65°C, energy efficiency class B
• Constant current operation: 240 mA at 15.84 V, 3.8 W per module (14 W per meter)
• Designed according to the Zhaga standard (Book 7)
• Solderless push-in terminals, easy series connection
• No additional heat sink required
• Short LED pitch for uniform light without light spots
• Color consistency to a 3-step MacAdam ellipse
• Lifetime of more than 40,000 hours (L80B10)
• Dimmable with a dimmable driver
• Dimensions: 279.5 x 20 x 4.57 mm
• Made in Germany
• 5-year warranty

Applications of the LumiBar-28-3090 LED Strip 4000K

With its very high efficacy, CRI90 light quality and Zhaga-compatible format, the LumiBar-28-3090 4000K is designed for the following main applications:

• Linear lighting: LumiBar modules are mounted end to end in linear luminaires, recessed or surface-mounted profiles and pendant lights. For example, four LumiBar-28-3090 modules (1.12 m) fit a 1.2 m luminaire and deliver about 2760 lm at only 15.2 W. With the short LED pitch and a diffuser, the line of light is uniform. Read more in our guides on creating lines of light with LED strips and designing efficient LED linear lamps.
• Troffer and panel lighting: In troffers and LED panels for suspended ceilings, several LumiBar modules are mounted in parallel rows on the base plate behind the diffuser. The rigid, Zhaga-compatible modules are easy to fix and wire, and their high efficacy and CRI90 make them a high-quality replacement for fluorescent tubes in offices, classrooms, hospitals and shops, where good color rendering improves visual comfort and concentration. More about LED strips and modules for troffer lights.
• High-quality white light: With a color rendering index of 90, the LumiBar 3090 reproduces colors more faithfully than standard CRI80 modules, while its very high efficacy keeps energy consumption low. The 4000K color temperature gives a clean, focused pure white light that supports concentration and alertness. Find out which color temperature suits your project in our guide Choosing the right color temperature for LED lighting.
• Horticulture: lettuce production: In vertical farms, rows of LumiBar-28-3090 modules can be mounted under each cultivation level. Their 4000K CRI90 white spectrum covers the whole visible range with a single LED type, supporting healthy crop growth while allowing easy visual inspection and comfortable working conditions, and the high efficacy keeps energy costs low. See our page on LED grow lights for lettuce production.
• Horticulture: microgreens: For microgreens trays, the compact rigid modules can be positioned close to the crop canopy and distributed according to tray dimensions and shelf geometry to reach the target light level evenly. More on LED grow light engines for microgreens production.

Please note: the LumiBar-28-3090 is not waterproof and is specified for operation at 10% to 60% relative humidity. For greenhouses, grow rooms and other humid environments, install it in a closed luminaire housing.

Built Around the Zhaga Standard (Book 7)

The Zhaga Consortium is a global lighting industry association that defines interface specifications, called Books, so that LED light engines from different manufacturers can be used interchangeably in the same luminaire. Zhaga Book 7 covers linear and square LED modules for indoor lighting that are operated with a separate LED driver and are mounted in the luminaire, and replaced, by professionals. It specifies the mechanical, thermal, photometric and electrical interfaces between the LED module and the luminaire, and defines 18 module categories by their maximum outer dimensions. In 2023, Book 7 became the first Zhaga specification to be published as an IEC standard, IEC 63356-2. More information is available on the Zhaga Book 7 page.

The LumiBar is designed according to Zhaga Book 7. With its dimensions of 279.5 x 20 mm, the LumiBar fits the Book 7 category L28W2, which defines a maximum module size of 280 x 24 mm.

• For luminaire manufacturers: a luminaire body designed around the Zhaga form factor accepts standardized modules, so you can switch to newer, more efficient LED generations or a second source without redesigning the luminaire.
• For maintenance and upgrades: existing luminaires with Zhaga Book 7 modules can be serviced or upgraded with LumiBar modules, extending their service life.
• For sustainable lighting: replaceable, standardized light engines make luminaires serviceable and support the replaceability of light sources required by the EU Ecodesign Regulation (EU) 2019/2020.

Technical Data of the LumiBar-28-3090 LED Strip 4000K

• Article number (SKU): 38850
• Equivalent model: LED Module 280-24
• LED manufacturer: Samsung
• Light color: Pure White, 4000K
• Color rendering index: CRI (Ra) 90
• Binning: 3-step MacAdam ellipse
• Photometric code: 940/339
• Luminous flux: 690 lm per module, 2465 lm per meter
• Efficacy: 182 lm/W (mains voltage luminous efficacy 199 lm/W)
• Beam angle: 120°
• Lifetime: >40,000 h (L80B10C1)
• Operating mode: Constant current, dimmable
• Operating point: 240 mA at 15.84 V
• Power: 3.8 W per module, 14 W per meter
• Number of LEDs: 24 per module
• Dimensions: 279.5 x 20 x 4.57 mm (L x W x H)
• Weight: 20 g
• Form factor: Designed according to Zhaga Book 7
• Connection: Solderless push-in terminals, 0.75 mm² (AWG 18) recommended
• Operating temperature at Tc: -40°C to +85°C
• Ambient temperature: -40°C to +50°C
• Storage temperature: -40°C to +100°C
• Certifications: CE, RoHS, REACH
• Photobiological safety (EN 62471): Risk group RG0
• Energy efficiency class: B
• Photometric reference: Values measured at TJ = 65°C, ±10%

Installation and Operation

• Mounting: mount the module flat on the luminaire body, ideally on a metal surface for good heat transfer; no additional heat sink is required. Do not bend the rigid circuit board and avoid mechanical stress on the components.
• Connection: the module has solderless push-in terminals. Strip the wire insulation at the connection point and insert the wire; we recommend a conductor cross-section of 0.75 mm² (AWG 18).
• LED driver: operate the modules with a constant current LED driver of 240 mA. Several modules can be connected in series: the current of the string stays the same, and the voltages add up. For example, 4 modules of 28 cm in series (about 1.12 m) need 63.4 V, which must lie within the output voltage range of the driver. Connect only modules of the same length in one series string. For dimming, use a dimmable driver.
• Handling: observe standard ESD precautions, keep the module away from aggressive chemicals, and store and operate it at 10% to 60% relative humidity.
• Safety: the driver must provide short-circuit, overload and overtemperature protection, and installation must comply with all applicable electrical and safety standards and should be carried out by a qualified electrician.

Why the LumiBar-28-3090 Outperforms Low-Cost LED Modules

• LED quality: we use only brand-name LEDs from Samsung, one of the world's top 10 LED manufacturers, with full manufacturer datasheets and performance tested in the lab and in real applications.
• Production quality: the modules are assembled in Germany on an ISO-certified line with high-speed automatic placement and vapor phase soldering under a protective gas atmosphere, which prevents oxidation and cold solder joints and improves the thermal connection between LED and circuit board, an important factor for LED lifetime. Laser bar codes ensure traceability.
• Realistic specifications: all values are measured at a junction temperature of 65°C, so the performance in our datasheet matches what you get in a real luminaire.

Who We Are: Ledrise, Professional LED Strips Made in Germany

Ledrise is the international online shop for high-performance LED strips and modules that we develop and manufacture in our own production facility in Germany and ship directly from there. With more than 20 years of experience in LED technology, our team of more than 70 people in Germany, Hong Kong and Romania has gained extensive application knowledge across many sectors, and thousands of business customers and consumers on five continents rely on us as their LED technology partner.

We use only LEDs from market leaders such as Nichia, Seoul Semiconductor, Cree, Samsung and ams OSRAM. Beyond standard products, we design and prototype custom LED modules, select and integrate optics, housings and drivers, and test and validate every solution in our in-house measuring and testing laboratory, supporting you from the first lighting concept to serial production.

Our Quality Promise

• Certified quality: our quality management is certified to DIN EN ISO 9001 and covers every step, from product development to customer service. Our manufacturing center in Germany is also certified to ISO 14001 for environmental management and ISO 45001 for occupational health and safety.
• Reel-to-reel manufacturing, unique in Europe: our fully automated reel-to-reel flex line uses plasma direct metallization to produce robust, flexible circuit boards in continuous lengths of up to 100 meters, with fewer interconnections and less material waste.
• Precision at every step: automated solder paste printing with inline inspection, high-speed ASM SIPLACE component placement, controlled reflow soldering, and automatic optical inspection that detects missing, offset or misaligned components.
• Full traceability: production batches are marked and tracked with laser-engraved barcodes.
• Honest data: the performance values in our datasheets match those in real-world applications.
• Long-term security: a 5-year warranty on this LED strip (see our warranty terms) and professional support for your lighting projects.

Learn more about Ledrise and our reel-to-reel flexible LED strip manufacturing in Germany.