OSRAM DULUX L 36 W/840 2G11 - Compact fluorescent tube neutral light 4000 K for luminaires with 2G11 base

OSRAM DULUX L 36 W/840 2G11 - Compact fluorescent tube neutral light 4000 K for luminaires with 2G11 base

The OSRAM DULUX L 36 W/840 2G11 is a high-performance, non-integrated compact fluorescent tube ( CFLni ) designed for luminaires with a 2G11 (4-pin) base. It offers a neutral white light of 4,000 K (code 840) with a CRI ≥ 80 , a luminous flux of 2,600 lm , and a lifespan of up to 20,000 hours (with electronic preheating equipment), ensuring uniformity and efficiency in professional applications. It is compatible with both electronic (ECG) and conventional (CCG) ballasts and can be dimmed from 1% to 100% when used with electronic ballasts from the QUICKTRONIC® QTi DALI/DIM range. Its double U-tube format, total length of 415 mm and diameter of 17.5 mm facilitate integration into linear luminaires, cold light projectors and recessed systems for direct and indirect lighting in industry, offices and public spaces .

Main features

• Power: 36 W
• Base: 2G11 (4 pins), single-ended lamp (CFLni)
• Luminous flux: 2,600 lm
• Color temperature: 4,000 K (LUMILUX Cool White)
• Color Rendering Index: Ra ≥ 80
• Luminous efficacy: 72 lm/W
• Adjustable: Yes, 1–100% with QUICKTRONIC® QTi DALI/DIM electronic ballasts
• Equipment compatibility: Works with ECG and CCG (with appropriate primer)
• Dimensions: total length 415 mm; tube diameter 17.5 mm
• Weight: ~94.3 g
• Shelf life (B50): 20,000 h (with ECG preheat); typical service life 13,000 h
• Flow maintenance (LLMF): 0.90 (4,000 h); 0.85 (8,000 h); 0.80 (20,000 h)
• Ambient temperature range: −5…+40 °C
• Lamp rated voltage and current: 106 V / 0.43 A (with ballast)
• Mercury content: 3.5 mg
• Energy class (EU 2019/2015): G

Product benefits

• Professional neutral light (4000 K): promotes natural color perception and concentration in work environments.
• Efficiency and uniformity: good luminous efficacy and flux maintenance throughout life.
• Installation flexibility: compact format and compatibility with electronic or conventional equipment.
• Lighting control: fine dimming option with suitable electronic ballasts.
• Reliability in continuous use: extended service life to reduce maintenance interventions.

Use cases

• Direct and indirect lighting in offices, hallways and common areas.
• Cold light (fluorescent) projectors and linear luminaires used in studios and sets that use a 2G11 base.
• Industry and production environments that demand neutral and homogeneous lighting.
• Commerce and retail: linear displays, wall-mounted and built-in shower enclosures.
• Public buildings, hotels and restaurants: efficient general lighting.

Frequently Asked Questions

What does 840 mean? It's the color coding: 8 indicates CRI ≥ 80 and 40 corresponds to 4000 K (neutral white).

Do I need a ballast? Yes. It is a non-integrated lamp; it requires an electronic ballast (recommended for stability and lifespan) or a conventional ballast with a starter.

Is it dimmable? Yes, with compatible dimmable electronic ballasts (e.g., QUICKTRONIC® QTi DALI/DIM). With a conventional ballast, dimming is not possible.

What is the exact length? The total length is 415 mm (not including the length of the pins).

Any usage recommendations? Avoid touching the glass with your bare hands, keep light fixtures clean, and use quality equipment to maximize lifespan and maintain light output.

How is it managed at the end of its useful life? It contains a small amount of mercury and must be recycled according to local regulations (WEEE/waste management).

Installation and compatibility

• Check the compatibility of the ballast (ECG/CCG) and, if applicable, the starter recommended by the luminaire manufacturer.
• For dimming , use QTi DALI/DIM electronic ballasts or other compatible ones; do not attempt to dim with CCG.
• Keep the ambient temperature between −5…+40 °C and ensure ventilation of the light fixture.

Project description

Non-integrated compact fluorescent lamp OSRAM DULUX L 36 W/840 2G11 ; 2G11 base (4 pins); 36 W; 106 V; 0.43 A; luminous flux 2,600 lm; 4,000 K; CRI ≥ 80; efficacy 72 lm/W; dimmable 1–100% with QTi DALI/DIM electronic ballasts; suitable for operation with ECG and CCG; LLMF: 0.90 (4,000 h), 0.85 (8,000 h), 0.80 (20,000 h); B50 lifetime 20,000 h (preheat ECG); ambient range −5…+40 °C; length 415 mm; diameter 17.5 mm; Hg content 3.5 mg; energy class G.