OSRAM 64637 EBV (A1/271) - MR16 100W 12V Halogen Lamp with Dichroic Reflector

OSRAM 64637 EBV (A1/271) - MR16 100W 12V Halogen Lamp with Dichroic Reflector

The OSRAM 64637 EBV is a professional 100W, 12V halogen lamp with an MR16 dichroic reflector and GZ6.35 base, designed for medical and scientific equipment, fiber illumination, microscopy, lighting effects, and projection. Its precise filament and reflector alignment ensures a stable and focused beam (SP), with a color rendering index (CRI) of 100 and a color temperature of 3000K. The XENOPHOT HLX version uses xenon gas instead of krypton, providing up to 10% more luminous flux with the same power consumption. It is dimmable, offers instant start, and maintains a virtually constant flux throughout its rated life of 1,500 hours. The dichroic coating of the reflector helps to produce a "cool beam" by reflecting some of the heat back, protecting the sample or work area.

Main features

• Power and voltage: 100 W, 12 V.
• Base: 2-pin GZ6.35 (6.35 mm spacing), specifically for photo-optical applications.
• Format: MR16 with dichroic coating (cool beam).
• Color and light quality: 3000 K (warm white), CRI 100.
• Optics: SP (Spot) beam with focal length/LCL 32 mm for efficient coupling to optics and light guides.
• Dimensions: diameter 51 mm, total length 42 mm.
• Nominal useful life: 1,500 h.
• Adjustable: Yes (with suitable dimmer/controller).
• HLX benefit: up to +10% luminous flux (XENOPHOT HLX versions with xenon gas).
• Operating position: s120.
• Standard codes: ANSI EBV, LIF A1/271.
• Packaging: individual unit; shipping box of 20 units.

Product benefits

• Precise and stable illumination: Filament and reflector alignment increases beam consistency and efficiency in optical systems.
• True color (Ra 100): ideal for visual examination, microscopy, scientific photography and dental applications.
• Make it cooler: the dichroic reflector reduces the frontal heat load, protecting samples and sensitive components.
• More light with HLX: the xenon version offers up to 10% more light output without increasing power.
• Simple maintenance: MR16 format with quick-insertion GZ6.35 base.

Use cases

• Clinical and dental: lighting of surgical/dental equipment and ceiling lights.
• Laboratory and microscopy: sample illumination, fiber optics and analysis systems.
• Projection and photography: analog projectors, enlargers and color heads.
• Entertainment and industry: lighting effects and special stage luminaires.

Frequently Asked Questions

Is it compatible with GU5.3/GX5.3 sockets?
No. This model uses GZ6.35 (6.35 mm spacing) photo-optical lamps. GU5.3/GX5.3 lamps have a 5.33 mm spacing and are not compatible. Always check the lamp holder on your device.

What is the difference between the standard 64637 and the 64637 HLX?
The HLX versions use xenon gas as a fill gas and provide up to 10% more luminous flux than the standard krypton version, while maintaining power and dimensions.

Can it be regulated with a dimmer?
Yes, the lamp is dimmable . Use a suitable 12V dimmer/transformer for halogen lighting.

Safety recommendations?
Use only in halogen-compatible fixtures with thermal/UV protection. Do not touch the quartz bulb with your fingers (wear gloves). The lamp reaches high temperatures; install with the equipment disconnected and allow to cool before handling.

Compatibility and reference codes

To determine compatibility, use the ANSI EBV and LIF A1/271 codes. Many professional projection, dental, and laboratory equipment systems specify these references in their manuals. If your equipment requires an MR16 with a GZ6.35 base and a 32 mm LCL, this lamp is the correct candidate.

Installation and best practices

• Check 12V voltage and transformer/driver compatible with halogen load.
• Avoid vibrations and dirt on the reflector to preserve the 1,500 h lifespan .
• Respect the s120 usage position indicated by the manufacturer.

Project description

Halogen lamp with MR16 reflector, 100 W, 12 V, GZ6.35 base, SP beam, 3000 K, CRI 100, 150 lm flux, LCL 32 mm, diameter 51 mm, length 42 mm, dichroic coating, position s120, 1,500 h lifespan; references: ANSI EBV, LIF A1/271; HLX version available.