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Osram Sylvania HLX 64623 EVA 100W Halogen Light Bulb

Osram HLX 64623 Sylvania EVA 100W Halogen Light Bulb, 10 Pack

$109.90
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SKU:
EVA (54251) - 10 Bulbs
UPC:
4050300012018
Availability:
Stock Item
Shipping:
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Product Description
OSRAM HLX/XENOPHOT halogen capsule for microscopy, medical/scientific illumination, and optical systems.
SOSCleanroom
Overview

The Osram / Sylvania HLX 64623 (ANSI code EVA) is a precision, low-voltage halogen capsule designed for stable, repeatable illumination in microscopy and other medical/scientific optical systems. “HLX” identifies OSRAM’s XENOPHOT technology, where xenon replaces the typical krypton fill gas to support strong performance and reduced bulb blackening. This listing is a 10-pack. SKU: EVA (54251) - 10 Bulbs.

Key Highlights
  • Electrical: 100W, 12V
  • ANSI Code: EVA
  • Mfg. Order Code: 54251
  • Base: GY6.35
  • Shape: T4
  • Average Life: 2000 hours
  • Pack Quantity: 10 bulbs
  • UPC: 4050300012018
Typical Applications
  • Microscope illuminators and optical instruments
  • Medical lighting and ophthalmic equipment
  • Projectors and precision optical systems requiring consistent capsule geometry
Handling Tip 
Avoid touching the capsule with bare hands. Oils and residues can create localized hot spots and shorten lamp life. Use clean nitrile gloves and/or a lint-free wipe during installation, and keep spares sealed until use.
Industry Update:
In July 2025, Ushio and ams OSRAM announced an agreement for Ushio to acquire ams OSRAM’s Entertainment & Industry Lamps (ENI) business, with closing expected by the end of March 2026. During and after transitions in specialty lamp portfolios, customers may see changes such as labeling, packaging, and part-number presentation across certain lamp families. Best practice: qualify replacements by the manufacturer ordering code and critical specs (100W/12V, GY6.35, and T4 envelope), and retain HLX 64623 / EVA / 54251 in maintenance records.
Need help selecting the right product?
If you need additional information please try our SOSCleanroom specific AI ChatBot which draws from our extensive cleanroom specific libraries.
Always confirm compatibility with your equipment model, required voltage (12V), wattage (100W), base type (GY6.35), and capsule geometry prior to installation.
The Technical Vault
By SOSCleanroom
Specs & Compatibility
Replacement Guidance Handling & Storage Cleanroom Considerations
Quick Specs
Manufacturer / Ordering Code Osram / Sylvania HLX 64623 (EVA) | Mfg. Order Code: 54251 | UPC: 4050300012018 | Pack: 10 bulbs
Lamp Type / Technology Low-voltage tungsten halogen capsule (HLX / XENOPHOT xenon fill)
Wattage / Voltage 100W / 12V
Base / Socket GY6.35
Shape / Envelope T4
Average Life 2000 hours
Primary Applications Projectors, medical lighting, microscopy, ophthalmic
HLX / XENOPHOT Note (Why It Matters)
“HLX” identifies OSRAM’s XENOPHOT halogen technology where xenon replaces krypton as the fill gas. In many optical applications, xenon can help reduce tungsten vaporization and support higher filament temperature—supporting strong output and improved lumen maintenance over time.
The Science: How a Halogen Bulb Produces Light
A halogen lamp is a type of incandescent source. Electrical current heats a tungsten filament until it becomes white-hot, producing continuous-spectrum light (visible plus infrared) through thermal radiation.
The “halogen” advantage comes from the halogen cycle inside a quartz (high-silica) envelope: a small amount of halogen (often iodine/bromine) reacts with evaporated tungsten and helps transport it back toward the filament where it redeposits. This reduces envelope blackening and helps maintain output—while also driving high operating temperatures.
Industry Update: ams OSRAM ENI Business → Ushio (Expected Close by End of March 2026)
Ushio and ams OSRAM announced an agreement for Ushio to acquire ams OSRAM’s Entertainment & Industry Lamps (ENI) business, with the transaction expected to close by the end of March 2026.
What this means for buyers: across certain specialty lamp lines, customers may encounter changes in labeling, packaging, or channel availability during the transition. To reduce risk, qualify replacements by 100W/12V, GY6.35, and capsule geometry, and keep the manufacturer ordering code (54251) in maintenance records.
Replacement & Handling Notes
  • Match electrical specs: use 100W / 12V only. Voltage mismatches are a common cause of premature failures.
  • Confirm base & capsule geometry: GY6.35 fit and filament positioning are critical for optical focus and brightness.
  • Keep the envelope clean: fingerprints/residues can create localized hot spots. Use clean nitrile gloves and/or a lint-free wipe.
  • Pack management: this is a 10-pack; store spares sealed and clean to reduce contamination during maintenance events.
Cleanroom Considerations

Treat lamp changes as a controlled maintenance step: minimize packaging debris, use low-lint handling materials, and keep the capsule free of oils and particulates prior to powering the instrument.

Stage clean nitrile gloves and a cleanroom-grade lint-free wipe during installation to reduce contamination risk and prevent residue transfer to nearby optics.

Need deeper specs or cross-references?
If you need additional information please try our SOSCleanroom specific AI ChatBot which draws from our extensive cleanroom specific libraries.
For mission-critical optical systems, confirm OEM requirements (voltage, wattage, base type, filament positioning, and thermal limits) prior to use.