The LEDVANCE OSRAM HALOSTAR 64425S AX 20W/G4 12V is a low-voltage halogen lamp built with very compact dimensions for use in space-constrained luminaire designs. The axial filament orientation ensures optimum directional light delivery, and the lamp carries IEC 60598-1 approval for open-type fixtures.

Corrosion-resistant special pins and a UV filter protect both the lamp connections and illuminated surfaces. The lamp does not contain mercury and supports dimming.

Key Features

• Axial filament for optimum directional light output
• Very compact dimensions enabling installation in modern and legacy luminaires
• Special corrosion-resistant pins
• UV filter integrated into the lamp
• G4 two-pin base at 12V
• Approved for open-type fixtures per IEC 60598-1
• Mercury-free

Product Benefits

• The axial filament focuses light in a defined direction, making this lamp effective in spotlights, entrance lights, and display or garden fixtures
• Corrosion-resistant pins maintain reliable contact in damp environments such as bathrooms, kitchens, and outdoor-rated housings
• UV filter limits ultraviolet exposure to nearby objects and materials sensitive to light degradation
• Full dimming support allows light output to be adjusted from full brightness downwards to match the task or ambiance
• Mercury-free construction meets environmental regulations and simplifies end-of-life disposal

Technical Specifications

• Model: HALOSTAR 64425S AX
• Power: 20 W
• Voltage: 12 V
• Base: G4
• Lamp Type: Halogen, low voltage
• Filament Orientation: Axial
• Colour Rendering Index (Ra): 100
• Average Lifespan: 2,000 hours
• Dimming: Adjustable brightness supported
• Compliance: IEC 60598-1
• Mercury Content: None

Why You'll Love It

• The G4 base at 12V is a standard format used across a wide range of decorative and display fixtures — no adapter needed for compatible luminaires
• The 20W output delivers noticeably more light than the 10W variant while retaining the same compact form factor
• Corrosion-resistant pins ensure the lamp stays connected reliably even in humid conditions
• Mercury-free design simplifies disposal and meets current environmental compliance requirements