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Ushio EPX 90W MR16 Halogen Light Bulb

Ushio EPX 90W MR16 Halogen Light Bulb

$26.50
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SKU:
EPX (1000349)
Availability:
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Quantity Option (Each):
1 Bulb
Product Description
Compact MR16 halogen reflector lamp (ANSI EPX) for projection, microscopy, and precision optical illumination.
 
Overview

The Ushio EPX is a 90W, 17V tungsten-halogen lamp in the MR16 reflector format, engineered for optical systems that require compact size, controlled beam geometry, and consistent filament placement. Identified by ANSI EPX, this lamp uses a GX5.3 bi-pin base and is commonly specified in projection equipment, microscopes, and fiber-optic illumination systems.

Key Highlights
  • Electrical: 90W, 17V
  • ANSI Code: EPX
  • Base: GX5.3 bi-pin
  • Shape: MR16 reflector (clear)
  • Color Temperature: ~3300K (nominal)
  • Average Life: 50 hours (nominal)
  • Burning Position: BD (Base Down)
Typical Applications
  • Compact projection systems
  • Microscopes and laboratory optical instruments
  • Fiber-optic light sources and inspection illumination
  • Scientific and technical imaging equipment
Selection Tip (EPX vs Similar MR16 Variants)
MR16 lamps may share the same GX5.3 interface but differ in voltage and optical design. Always qualify by ANSI EPX, then confirm 17V and 90W. Installing a 12V, 21V, or 24V MR16 variant in a 17V system can result in improper output or premature failure.
Handling Tip
Avoid touching the quartz envelope with bare hands. Use clean nitrile gloves or a lint-free wipe. Confirm transformer output under load; even small voltage increases above 17V can significantly reduce lamp life.
Industry Update (Ushio & ENI Continuity)
Ushio has signed an agreement to acquire ams OSRAM’s Entertainment & Industry Lamps business, with closing expected by the end of March 2026. During this transition, customers may observe branding or packaging updates even when technical specifications remain unchanged. SOSCleanroom continues to support specialty lamps and can assist with part-number continuity validation.
Need help selecting the right product?
Always confirm ANSI ID (EPX), voltage (17V), wattage (90W), base (GX5.3), and fixture burn orientation prior to installation.
The Technical Vault
By SOSCleanroom
ANSI EPX
Ushio EPX — 90W 17V — MR16 Reflector — GX5.3
Compact low-voltage halogen reflector lamp engineered for precision optical systems.
Core Qualification Specifications
ANSI CodeEPX
Voltage17V
Wattage90W
BaseGX5.3
ShapeMR16
Color Temperature~3300K
Rated Life50 hrs
Burning PositionBD
Engineering & Optical Design

EPX is a quartz tungsten-halogen reflector lamp. The halogen gas fill enables the regenerative halogen cycle, helping maintain lumen stability and limiting envelope darkening during operation.

The MR16 reflector integrates optical control directly into the lamp. Reflector curvature and filament positioning determine beam distribution and focus. In microscopy and projection systems, correct light center length and voltage matching are critical for preserving image brightness and uniformity.

Field Reliability Notes
Most premature failures are caused by contamination or over-voltage. A 5% increase in supply voltage can reduce lamp life dramatically. Verify transformer regulation and ensure firm GX5.3 pin contact to prevent localized heating.
Industry Update (Ushio & ams OSRAM ENI)
Ushio has signed an agreement to acquire ams OSRAM’s Entertainment & Industry Lamps business, expected to close by the end of March 2026. Branding or packaging updates may occur during transition, while technical specifications remain consistent. SOSCleanroom continues to support these specialty lamps and assists customers with continuity validation.