OSRAM HALOSTAR | 20W G4 | 12V UV-Filter Halogen Capsule

The Osram Halostar (64425) is an ultra-compact low-voltage halogen lamp designed for high-performance accent and task lighting. Delivering 320 lumens of warm 2800K light, this 20-watt capsule is a staple for under-cabinet puck lights, desk lamps, and sophisticated landscaping fixtures. Its incredibly small 10mm diameter allows for integration into revolutionary, slim luminaire designs where space is at a premium. Featuring integrated UV-filter glass, it significantly reduces the risk of fading for illuminated objects, while its CRI 100 rating ensures that colors are rendered with perfect accuracy and brilliance.

Product Overview

The Osram 20W 12V G4 capsule is engineered for reliability and superior light quality. The axial filament design ensures optimal light distribution within the fixture's reflector, maximizing the "brilliant" effect essential for jewelry cases and high-end retail displays. Unlike cheaper alternatives, the Halostar line is approved for use in open luminaires according to IEC 60598-1, offering greater flexibility in fixture choice. This lamp is fully dimmable, allowing you to create the perfect mood from a soft amber glow to a bright, crisp white light. Its long 2,000-hour rated life is supported by Osram's unique bulb pinch technology, which protects the filament against premature failure due to heat disruption.

• Low Thermal Output: Incredibly small dimensions open up new design options for miniature luminaires.
• UV Filter: Integrated shield protects sensitive materials from UV-induced discoloration.
• Superior Rendering: Ra=100 ensures that skin tones, art, and merchandise look their absolute best.
• Easy Handling: Standard G4 base allows for simple "plug-in" replacement in a wide variety of fixtures.

Technical Specifications

• Brand: Osram
• Model/Order Code: 64425 (Halostar Standard)
• ILCOS: HSGST/C/UB-20-12-G4-10/22
• Wattage: 20W
• Voltage: 12V (Requires Transformer)
• Luminous Flux: 320 Lumens
• Color Temperature: 2800K (Warm White)
• CRI: 100
• Rated Average Life: 2,000 Hours
• Base Type: G4 (4mm Pin Spacing)
• Dimensions: 33mm (MOL) x 10mm (Diameter)

Handling & Safety Tips

• No Bare Hands: Never touch the quartz glass with your fingers. Use a cloth or the plastic wrapper. Oils from your skin can cause "hot spots" that lead to the bulb shattering. If touched, clean with alcohol.
• Transformer Required: This is a 12V lamp. Ensure your fixture utilizes a 12V electronic or magnetic transformer before installation.
• Dimming: This halogen lamp is 100% dimmable with standard dimmers designed for the specific transformer in your fixture.