OSRAM SYLVANIA 54957 ENG 300W 120V Halogen Photo Optic Lamp – MR16 GY5.3 Open Face

The OSRAM SYLVANIA ENG Photo-Optic Halogen Lamp is a high-intensity 300-watt, 120-volt MR16 open-face lamp engineered for precision optical lighting systems used in medical equipment, projectors, and specialty optical instruments.

Featuring a GY5.3 bi-pin base, a CC-8 filament, and a 3450K color temperature, the ENG lamp delivers bright, focused illumination for demanding professional applications.

Technical Specifications

• Manufacturer: OSRAM SYLVANIA
• NAED Number: 54957
• ANSI Code: ENG
• Lamp Type: Photo-Optic Halogen Lamp
• Bulb Shape: MR16 Open Face
• Wattage: 300 Watts
• Voltage: 120V
• Base Type: GY5.3 Bi-Pin
• Filament Design: CC-8
• Color Temperature: 3450K
• Rated Average Life: 15 Hours
• Working Light Distance: 152.4 mm
• Maximum Overall Length (MOL): 44.5 mm
• Bulb Diameter: 50.67 mm
• Burn Position: Base Down / Horizontal
• Construction: Open Face (No Cover Glass)

Key Features

• High-intensity 300W photo-optic halogen lamp
• MR16 open-face design for precise optical illumination
• Bright 3450K color temperature for high-contrast lighting
• Precision CC-8 filament for stable light output
• GY5.3 bi-pin base for accurate fixture alignment
• Designed for medical, projection, and optical equipment

Typical Applications

• Medical equipment illumination
• Optical projection systems
• Laboratory and microscope lighting
• Industrial inspection equipment
• Specialized photo-optic lighting systems

Additional Information

• Focused beam design for optical applications
• Must be used in approved enclosed halogen fixtures
• Manufactured in Japan by Ushio Inc.

Handling & Safety Notes

• Do Not Touch Quartz Envelope: Always handle with gloves or lint-free cloth.
• High Temperature Operation: Lamp operates at extremely high temperatures.
• Allow Cooling Before Replacement: Wait until lamp fully cools.
• Use Only in Approved Fixtures: Required for safe operation.