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Osram Sylvania EKE 150W MR16 Halogen Light Bulb

Osram Sylvania EKE 150W MR16 Halogen Light Bulb

$10.70
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SKU:
EKE (54842) EACH
UPC:
046135548420
Availability:
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Product Description
High-output MR16 halogen reflector lamp for microscope, medical, and scientific illumination.
SOSCleanroom
Overview

The Osram / Sylvania EKE is a precision 150W, 21V halogen lamp in the MR16 reflector format, designed to deliver a bright, stable beam for optical systems that depend on consistent illumination and repeatable performance. It uses a GX5.3 bi-pin base and is commonly specified as Halogen Lamp with MR-16 Reflector. SKU: EKE (54842) EACH.

Key Highlights
  • Mfg. Ordering Code: 54842
  • Electrical: 150W, 21V
  • Base: GX5.3 Bi-Pin
  • Type: Halogen lamp with MR-16 reflector
  • Color Temperature: 3,300K
  • Shape: MR16 (50.7mm diameter)
  • Average Life: 200 hours
  • UPC: 046135548420
Typical Applications
  • Microscope illuminators and optical instruments
  • Medical and dental lighting systems using MR16 reflector lamps
  • Scientific and inspection equipment requiring consistent beam output
Handling Tip 
Halogen reflector lamps run hot and are sensitive to surface contamination. Avoid touching the glass with bare hands. Use clean nitrile gloves and/or a lint-free wipe to minimize residue and reduce the risk of premature failure. Allow the lamp to cool fully before removal.
About Osram / Sylvania (Display & Optic)
OSRAM’s Display/Optic specialty lamp programs serve diverse markets including entertainment, cinema projection, medical/scientific, semiconductor fabrication, and airfield/aircraft applications. SOSCleanroom (Specialty Optical Systems, Inc.) has supported specialty lighting as a distributor for 40+ years, helping customers maintain consistency by qualifying replacements using the critical specs that matter in real equipment.
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 a transition, customers may see changes such as labeling, packaging, part-number presentation, and channel availability. Best practice: qualify replacements by the manufacturer code and critical specs (150W/21V, GX5.3, and MR16 geometry) and retain the identifier EKE / 54842 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 (21V), base type (GX5.3), and MR16 diameter prior to installation.
The Technical Vault
By SOSCleanroom
Specs & Engineering Notes
Halogen Science MR16 Reflector Optics Thermal & Handling Cross-Reference Guidance
Quick Specs
Manufacturer / Ordering Code Osram / Sylvania EKE  |  Mfg. Ordering Code: 54842
Lamp Type / Technology Low-voltage tungsten halogen with MR16 reflector
Wattage / Voltage 150W / 21V
Base / Socket GX5.3 Bi-Pin
Shape / Envelope MR16 (50.7mm diameter)
Color Temperature 3,300K
Average Life 200 hours
The Science: How a Halogen Bulb Produces Light
A halogen lamp is a type of incandescent source. Electrical current passes through a tungsten filament, and the filament’s resistance converts electrical energy into heat. At operating temperature the filament becomes white-hot and emits continuous-spectrum light (visible plus infrared) via thermal radiation.
What makes it “halogen” is the fill gas: an inert gas plus a small amount of halogen (typically iodine or bromine) inside a quartz envelope. Tungsten that evaporates from the filament forms tungsten-halide compounds, which circulate and then dissociate near the hotter filament region—returning tungsten back to the filament. This halogen cycle helps reduce blackening and supports higher filament temperatures for a brighter, whiter output, but it also drives high operating temperatures and strict handling requirements.
MR16 Reflector Engineering: Why the Reflector Matters
The MR16 format integrates a reflector behind the filament to shape and control the beam. In microscopes, medical illumination, and fiber-coupled systems, beam geometry directly impacts coupling efficiency, field uniformity, and usable brightness at the target.
Because many optical systems are designed around a very specific source geometry, the safest replacement method is to match V/W, base type, and MR16 geometry rather than substituting by “looks similar” alone.
Osram / Sylvania Specialty Lamps: Program Context
Osram’s Display/Optic specialty lamp portfolio supports markets ranging from entertainment and projection to medical/scientific and semiconductor-related applications. For customers maintaining critical equipment, the most reliable continuity strategy is strong documentation: keep the EKE / 54842 identifier, track changeout intervals, and qualify replacements by the specs that drive optical performance.
Industry Update: ENI Business Transaction (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 closing expected by the end of March 2026. Practical impact for buyers: you may see changes in labeling, packaging, part-number presentation, and distribution channels over time. Maintain the low-risk approach by documenting core lamp identifiers (EKE / 54842) and qualifying replacements by 150W/21V, GX5.3, and MR16 geometry.
Replacement & Handling Notes
  • Match voltage and base: This is a 21V lamp with a GX5.3 bi-pin base—avoid substitutions that alter fit or source geometry.
  • Control contamination: Fingerprints/residue can create localized hot spots. Use clean nitrile gloves and/or a lint-free wipe.
  • Allow cool-down: MR16 halogen lamps run hot; remove only after sufficient cooling to reduce burn risk and thermal shock.
Cleanroom Considerations

In controlled environments, treat lamp changes like a minor maintenance event: minimize packaging debris, use low-lint handling materials, and keep the lamp envelope free of oils and particulates prior to powering the instrument.

For best results, stage clean nitrile gloves and a cleanroom-grade lint-free wipe during installation to reduce contamination risk and prevent residue transfer to the lamp.

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 instruments, confirm OEM requirements (voltage, base type, reflector geometry, and thermal limits) prior to use.