OSRAM DULUX L 36 W/840 2G11 – LUMILUX Cool White 4000K Compact CFL Tube (2G11 Base, Dimmable)

OSRAM DULUX L 36 W/840 2G11 – LUMILUX Cool White 4000K Compact CFL Tube (2G11 Base, Dimmable)

The OSRAM DULUX L 36 W/840 is a double-turn compact fluorescent tube (CFLni) with a 4-pin 2G11 base , designed to offer extremely high efficiency , high luminous flux , and a long lifespan in professional applications. It provides neutral white light (LUMILUX Cool White) at 4000 K with a CRI ≥ 80 , a nominal luminous flux of 2,600 lm , and up to 2,900 lm at 25 °C , with optimized light maintenance over time. It is dimmable (1–100% with compatible fixtures) and can operate with both electronic (ECG) and conventional (CCG) ballasts, simplifying its integration and replacement in a wide variety of luminaires.

It stands out for being shorter than an equivalent tubular fluorescent lamp , facilitating compact luminaire designs without sacrificing performance. Its T16 construction (Ø 17.5 mm) and total length of 415 mm maximize the luminance of the emitting surface ( ≈ 2.8 cd/cm² ) and ensure uniform lighting in offices, shops, hospitality, industry, and public buildings.

Main features

• Technology: Non-integrated compact fluorescent (CFLni), double loop, 2G11 (4 pins)
• Power/voltage/current: 36 W / 106 V / 0.43 A
• Light color: 4000 K (LUMILUX Cool White – 840) , CRI Ra ≥ 80
• Luminous flux: 2,600 lm (nominal); 2,900 lm at 25 °C
• Regulation: Yes, 1–100% with compatible electronic ballasts (e.g., QUICKTRONIC)
• Flow maintenance (LLMF): 0.90 (4,000 h); 0.88 (6,000 h); 0.85 (8,000 h); 0.84 (12,000 h); 0.81 (16,000 h); 0.80 (20,000 h)
• Lifespan: up to 20,000 h (B50, with preheating ECG)
• Compatibility: Works with ECG and CCG ; suitable for use with a primer in a CCG installation
• Construction: T16 outer blister; less than half the length of an equivalent tubular
• Working environment: −5…+40 °C
• Sustainability: Mercury content 3.5 mg ; WEEE compliant
• Energy efficiency class: G (declared consumption: 38 kWh/1000 h )

Product benefits

• Very economical in consumption and maintenance thanks to its high efficiency and long life.
• Extraordinary luminous flux for its size, with stable performance for thousands of hours.
• Compact format that allows for smaller and more discreet luminaires than equivalent T8/T5 tubular lamps.
• Installation flexibility : works with electronic or conventional ballasts (with starter).
• Neutral light quality 4000 K suitable for prolonged visual tasks in workspaces.

Use cases

• Offices and public buildings : recessed/recessed luminaires, screens and linear downlights.
• Retail and supermarkets : aisles, display areas and back-of-house cameras.
• Hospitality : general lighting in kitchens, service areas and common areas.
• Industry and logistics : production lines, warehouses and technical rooms.

Frequently Asked Questions

• Does it need a primer? In installations with conventional ballast (CCG) , yes. With electronic ballast (ECG) , the primer is not necessary.
• Is it adjustable? Yes, with an adjustable ECG (e.g., QUICKTRONIC QTi DALI/DIM) it can be attenuated between 1 and 100%.
• Why are there two flow figures (2,600 and 2,900 lm)? 2,600 lm is the nominal value ; 2,900 lm is the value measured at 25 °C under reference conditions.
• Does it contain mercury? Yes, 3.5 mg . It must be managed according to WEEE regulations at the end of its life.

Installation and safety

• Check the compatibility of the control equipment (ECG/CCG) and the nominal voltage/current .
• Respect the specified ambient temperature and ensure adequate ventilation in the light fixture.
• Do not touch the electrodes; insert/remove while holding the lamp body.
• Manage waste in accordance with the WEEE Directive and local regulations.

Project description

OSRAM DULUX L 36 W/840 (CFLni) tube, 2G11 base ; 36W , 106V , 0.43A ; 4000 K (LUMILUX Cool White), Ra ≥ 80 ; nominal flux 2,600 lm ( 2,900 lm at 25 °C ); LLMF : 0.90/0.88/0.85/0.84/0.81/0.80 (4/6/8/12/16/20 thousand h); length 415 mm , Ø 17.5 mm (T16); ambient −5…+40 °C ; B50 life 20,000 h (with pre-warming ECG); adjustable ; mercury 3.5 mg ; energy class G (38 kWh/1000 h).