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Small clear halogen capsule bulb with two metal pins

OSRAM SYLVANIA

OSRAM SYLVANIA 64650 50W 22.8V Halogen Standard Bulb

SKU CH-W59T-2ND7E

50 W 22.8 V halogen bulb delivers 1000 lumens with CRI 100 and 1300-hour life

  • TypeHalogen Bulbs
  • Lumen Range1000
  • Wattage50
  • Life Time Hours1300
  • Color Rendering Index100
  • 10% higher luminous efficacy than standard halogen
  • Precise filament alignment via patented quartz pinch technology
  • 1000 lumens at 50 watts and 22.8 volts
  • 100 CRI for accurate colour rendering
  • 1300-hour rated life with instant-on and dimmable operation

Precise filament alignment halogen bulb

The OSRAM 64650 is a 50W 22.8V tungsten halogen lamp built with patented quartz pinch technology that keeps the filament precisely aligned. It delivers 1000 lumens with a colour rendering index of 100 and a rated life of 1300 hours. The bulb is designed as a direct replacement for the SM-H2000 in microscopy, laboratory analysis, UV curing, fibre illumination and surgical or dental overhead lighting where accurate colour and instant output matter.

Dimmable 22.8V supply requirement

This lamp operates on a 22.8V supply and is fully dimmable, giving users control over intensity for sensitive imaging or procedures. It provides nearly constant luminous flux throughout its 1300-hour life and achieves 10% higher luminous efficacy than standard halogen types. Buyers who need a different voltage, a non-dimmable source or a longer-life technology such as LED will not be served by this specific halogen design.

Direct SM-H2000 replacement installation

Installation consists of removing the old SM-H2000 and seating the 64650 in the same socket, taking care not to touch the quartz envelope with bare fingers. Oil contamination can create hot spots that shorten the 1300-hour rating, so clean gloves or a lint-free cloth are recommended. The bulb lights instantly at full output, but users must verify that their fixture supplies exactly 22.8V and can handle 50W to avoid premature failure.

Highlights

  • 10% higher luminous efficacy than standard halogen
  • Precise filament alignment via patented quartz pinch technology
  • 1000 lumens at 50 watts and 22.8 volts
  • 100 CRI for accurate colour rendering
  • 1300-hour rated life with instant-on and dimmable operation

Specifications

BrandOSRAM
TypeHalogen Bulbs
Lumen Range1000
Wattage50
Life Time Hours1300
Color Rendering Index100

Questions about this item

Should I choose the 50 W version or a lower-wattage halogen bulb?

The 50 W model delivers 1000 lumens; a lower-wattage halogen would produce less light and may not meet the intensity needed for microscopy or surgical illumination.

What does the 1000 lumen rating mean when the bulb is installed in my equipment?

You get 1000 lumens of bright, white light with a CRI of 100, providing accurate colour rendering for laboratory analysis, fibre illumination or dental overhead tasks.

How does the 22.8 V rating affect compatibility with my power supply?

The bulb requires a 22.8 V supply; using a different voltage will prevent operation or damage the lamp, so match your transformer or ballast to this exact voltage.

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