OSRAM DECOSTAR 51 | 50W MR16 Halogen | 10° Spot GU5.3 Base

The Osram Decostar 51 (ANSI Code EXT) is a professional-grade 50W low-voltage halogen reflector lamp designed for precision accent lighting. Featuring a dichroic reflector, this MR16 bulb significantly reduces thermal stress on illuminated subjects by emitting up to 66% of its heat through the rear of the lamp. This makes it the ideal choice for heat-sensitive displays, such as galleries, jewelry cases, or retail exhibits. With a tight 10° spot beam spread and a perfect 100 CRI, it delivers a brilliant, concentrated beam of light that renders colors with absolute accuracy and professional clarity.

Product Overview

The Osram Decostar 51 series is engineered for those who require precision and thermal control. By utilizing a specialized coating on the glass reflector, visible light is directed forward while infrared radiation (heat) is passed through the back. This technology ensures that delicate objects—from paintings to high-end merchandise—remain cool under intense spotlighting. The integrated UV-Filter further protects against the premature fading of colors or deterioration of materials. This lamp is rated for use in both open and enclosed luminaires, adhering to IEC 60432-3 safety standards for low-pressure vessels.

• Dichroic Reflector: Diverts 66% of heat away from the beam, protecting heat-sensitive displays.
• Superior Color Rendering: A CRI of 100 ensures that colors appear exactly as they should under natural light.
• Concentrated Beam: The 10-degree spot is perfect for sharp accentuation and highlighting architectural details.
• Constant Light Output: High-quality axial filament design ensures a uniform and steady beam throughout the lamp's life.

Technical Specifications

• Brand: Osram
• Product Line: DECOSTAR 51
• ANSI Code: EXT
• Wattage: 50W
• Voltage: 12V
• Base Type: GU5.3 (Round Bi-Pin)
• Color Temperature: 3000K (Warm White)
• Beam Spread: 10° Spot
• Color Rendering Index (CRI): 100
• Rated Average Life: 2,000 Hours
• ILCOS Code: HRGS//UB-50-12-GU5.3-51/10
• Feature: Integrated UV-Filter & Deco Cover glass

Safety & Installation Guide

• Transformer Required: This is a 12V low-voltage lamp and must be used with a compatible step-down transformer.
• Handling: To maximize lamp life, avoid touching the glass or reflector with bare hands; skin oils can cause "hot spots" leading to premature failure.
• Dimmable: This halogen lamp is fully dimmable, allowing for total control over lighting ambiance and intensity.
• Luminaire Safety: Approved for use in open luminaires according to IEC 60432-3 standards.

Primary Applications

• Retail Displays: Highlighting jewelry, watches, and boutique apparel.
• Museums & Galleries: Precision spotlighting for heat-sensitive paintings and sculptures.
• Residential Accent: Highlighting artwork, fireplace mantels, or decorative architectural features.
• Hospitality: Accent lighting in restaurants, bars, and hotel lobbies.