Halogen capsule lamp Osram G4 reflector 20W 8V 35mm

Osram halogen capsule lamp G4 reflector 20W 8V 35mm is a compact low-voltage light source with an integrated reflector that provides focused white light. The capsule design and G4 bi-pin base make it suitable for small directional fixtures where space is limited. With a nominal power of 20 watts and an operating voltage of 8 volts, the lamp delivers concentrated illumination for task lighting, accenting, and display applications while keeping overall dimensions to a minimum.

Advantages

The integrated reflector concentrates light forward to increase usable illuminance in a targeted area, reducing stray light. The small 35 mm length allows installation in tight housings and shallow fixtures. Halogen technology provides consistent color rendering and smooth dimming behaviour when used with compatible low-voltage dimmers or transformers. The G4 bi-pin connection ensures simple mechanical and electrical fit in fixtures designed for G4 capsules.

Suitable for

• Display cases and retail showcases
• Cabinet, under-cabinet and shelf lighting
• Small directional spotlights and reading lamps
• Architectural accent lighting and model illumination

Key specifications

• Lamp type: halogen capsule with integrated reflector
• Base: G4 bi-pin
• Power consumption: 20 W
• Nominal voltage: 8 V
• Overall length: 35 mm
• Light output: focused directional beam (reflector)
• Color characteristic: warm white halogen light with high color rendering

How to use

Install the lamp into a compatible fixture that accepts G4 bi-pin capsules and is rated for low-voltage halogen sources. Ensure the fixture’s transformer or power supply provides the correct 8 V operating voltage and sufficient current for a 20 W lamp. For replacement, allow the lamp and fixture to cool before handling; grip the capsule by its base rather than the glass to avoid oil contamination and possible premature failure. Follow the fixture manufacturer’s instructions and local electrical regulations when installing or replacing the lamp.

Usage recommendations

Use a properly rated low-voltage transformer and, if dimming is required, select a dimmer compatible with halogen loads. Provide adequate ventilation around the fixture to manage heat output and avoid enclosures that do not permit heat dissipation. Replace lamps in matched sets where consistent color and intensity are required for display or accent lighting.