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EKE/FA 150W MR16 Halogen Light Bulb

EKE/FA 150w Halogen Reflector MR16 Light Bulb

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SKU:
EKE/FA EACH
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Product Description
High-output MR16 halogen reflector lamp for fiber optics, microscopy, medical, and scientific illumination.
SOSCleanroom
Overview

The EKE/FA is a precision 150W, 21V halogen lamp built in the MR16 reflector format for systems that require a bright, stable beam and repeatable optical performance. This SOS (Specialty Optical Systems) lamp uses a GX5.3 bi-pin base and is commonly referenced by the industry designation JCR21V-150W (EKE). SKU: EKE/FA EACH.

Key Highlights
  • Electrical: 150W, 21V
  • Base: GX5.3 Bi-Pin
  • Type: Halogen lamp with MR16 reflector (faceted)
  • Color Temperature: 3300K  |  CRI: 100
  • Dimensions: MR16 (51mm diameter)  |  Max overall length (MOL) 44.831mm
  • Average Life: 200 hours  |  Operating Position: Any
  • Reflector: Coated reflector finish (MR16)
Typical Applications
  • Fiber optic illuminators and light sources (medical/industrial)
  • Microscope illuminators and optical instruments using MR16 reflector geometry
  • Medical and dental equipment requiring consistent beam output and repeatable lamp positioning
  • Scientific and inspection systems where stable illumination is critical
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 SOSCleanroom Specialty Lighting
SOSCleanroom (Specialty Optical Systems, Inc.) supports specialty lighting programs with 40+ years of distribution experience. Our focus is helping customers maintain consistent optical performance by qualifying lamps by 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 application code and critical specs (150W/21V, GX5.3, and MR16 geometry) and retain identifiers like EKE / EKE/FA 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 dimensions prior to installation.
The Technical Vault
By SOSCleanroom
Specs & Engineering Notes
Halogen Science MR16 Reflector Optics Power & Thermal Cross-Reference Guidance
Quick Specs
Ordering Code (SOS) EKE/FA EACH (MR16 faceted reflector)
Industry Designation EKE / JCR21V-150W (common reference)
Lamp Type / Technology Low-voltage tungsten halogen with MR16 reflector
Wattage / Voltage 150W / 21V
Base / Socket GX5.3 bi-pin
Color / Quality 3300K  |  CRI 100  |  Filament: CC-8
Dimensions MR16 Ø 51mm  |  MOL 44.831mm  |  Operating position: Any
Rated 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.
The “halogen” difference 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 optical instruments and fiber illuminators, beam geometry directly impacts coupling efficiency, field uniformity, and usable brightness at the target.
The EKE/FA is a faceted reflector style (multi-faceted surface), commonly selected to improve beam mixing and reduce hot spots compared to a smooth paraboloid in certain optical trains. Reflector coatings are used to manage reflectivity and heat behavior; confirm your OEM requirements if your system relies on specific reflector performance characteristics.
Power, Voltage & Thermal Notes
  • Low voltage, high current: 21V halogen systems run higher current than 120V lamps—use the correct supply and connectors rated for the load.
  • Voltage accuracy matters: Small voltage changes can noticeably shift color temperature and lamp life. Use regulated power when stability is required.
  • Heat management: MR16 halogen lamps operate at high internal temperatures. Ensure airflow and fixture compatibility, and allow cool-down time before handling.
Cross-Reference Guidance (Keep Your Maintenance Records Clean)
The EKE family appears under many brands and catalog systems. To reduce mis-picks, anchor your cross-reference on the core identifiers and critical specs: EKE / JCR21V-150W, 150W/21V, GX5.3, and MR16 geometry.
Common examples you may encounter include manufacturer codes such as Osram 54842, Ushio 1000306, GE 35200, and similar EKE designations across OEM service manuals. Always validate against your equipment’s required optical geometry and reflector style (e.g., EKE vs. EKE/FA).
Industry Update: ENI Business Transition (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 channel availability over time. Maintain the low-risk approach by documenting the core lamp identifiers (EKE / EKE/FA) and qualifying replacements by V/W, base, and critical dimensions.
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 style, and thermal limits) prior to use.