The LEDVANCE OSRAM DECOSTAR 35S 44890 WFL 20W/GU4/12V is a low-voltage halogen reflector lamp with a 35 mm diameter dichroic reflector. The dichroic coating deflects infrared heat rearward rather than forward into the beam, protecting heat-sensitive objects in the lit area.

With a GU4 base at 12V, a deco cover, and IEC 60598-1 approval for open-type fixtures, this lamp suits a wide range of accent, kitchen, mirror, and display lighting applications. It does not contain mercury.

Key Features

• Dichroic reflector reduces heat in the light beam by up to 66%
• 35 mm reflector diameter
• Wide flood (WFL) beam distribution
• GU4 base at 12V operating voltage
• Deco cover
• UV filter integrated
• Mercury-free
• Approved for open-type fixtures per IEC 60598-1

Product Benefits

• The dichroic reflector keeps infrared heat out of the beam, reducing thermal stress on displayed items such as food, merchandise, and artwork
• 100% adjustable brightness gives precise control over light level for accent or task lighting scenarios
• Ra 100 colour rendering index reproduces colours with maximum fidelity — important for retail, hospitality, and display environments
• The deco cover provides a clean, finished front face in fixtures where the lamp is exposed to view
• 4,000-hour average lifespan reduces maintenance frequency for both domestic and commercial installations

Technical Specifications

• Model: DECOSTAR 35S 44890 WFL
• Power: 20 W
• Voltage: 12 V
• Base: GU4
• Reflector Diameter: 35 mm
• Beam Type: Wide flood (WFL)
• Lamp Type: Halogen reflector with dichroic coating
• Heat Reduction in Beam: up to 66%
• Colour Rendering Index (Ra): 100
• Average Lifespan: 4,000 hours
• Dimming: 100% adjustable brightness
• Compliance: IEC 60598-1
• Mercury Content: None

Why You'll Love It

• The 35 mm diameter is more compact than the 51 mm DECOSTAR variant, fitting smaller luminaires and track systems designed for MR11-sized lamps
• Wide flood distribution lights a broader area from a single lamp position, reducing the number of lamps needed for even coverage
• The GU4 base is the standard for MR11 low-voltage halogen reflectors, making this a direct replacement in compatible fixtures
• Mercury-free construction eases disposal and meets environmental regulations