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Ushio USH102D 100W Short Arc Mercury Lamp

Ushio USH102D 100W Short Arc Mercury Lamp

$134.00
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SKU:
USH102D (5000273)
UPC:
048777278505
Availability:
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Product Description
High-radiance 100W short-arc mercury illumination for fluorescence microscopy and precision optical instruments.
SOSCleanroom
Overview

The Ushio USH102D is a 100W, 20V short-arc mercury lamp engineered to deliver high radiance UV/visible output from a compact arc. It is commonly specified for microscopy illumination and analytical instruments where stable arc performance and repeatable lamp positioning are critical. SKU: USH102D (5000273).

Key Highlights
  • Electrical: 100W, 20V
  • Average Life: 200 hours
  • Manufacturer Ordering Code: 5000273
  • Dimensions: Length 3.54 in; Diameter 0.39 in
  • Common Socket Reference: SFa7.5-2 (verify your lamp house / OEM requirement)
  • UPC: 048777278505
Typical Applications
  • Fluorescence microscopy illumination systems
  • Diagnostic and industrial analytical equipment (instrument-specific)
  • UV/visible optical systems requiring high radiance from a compact arc source
Handling Tip 
Short-arc mercury lamps operate at high temperature and high internal pressure and require an OEM lamp house and ballast/igniter. Do not touch quartz with bare hands. Follow OEM cool-down and safety interlock procedures. Use clean nitrile gloves and a lint-free wipe to minimize residue and contamination risk.
About Ushio
Ushio is a global photonics and specialty lighting company developing light sources and light-based solutions across industrial markets (including semiconductor-related applications), visual imaging, and life sciences. Ushio’s specialty lamp portfolio includes short-arc technologies used in microscopy, analytical instrumentation, and high-performance optical systems.
Trusted Distribution Experience
SOSCleanroom (Specialty Optical Systems, Inc.) has been distribution partners for over 40 years, supporting customers with sourcing continuity, cross-references, and application-driven product selection for mission-critical instruments and systems.
Industry Update:
In July 2025, Ushio announced an agreement to acquire ams OSRAM’s Entertainment & Industry Lamps (ENI) business, with closing expected in Q1 2026 (by the end of March 2026). During and after portfolio transitions, customers may see changes such as labeling, packaging, part-number presentation, and distribution channels. Best practice: qualify replacements by the manufacturer code and critical specs (100W/20V plus the correct mechanical envelope and instrument socket requirement) to maintain continuity.
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Always confirm compatibility with your instrument OEM requirements (wattage, voltage, socket/basing, lamp orientation, and mechanical envelope) prior to installation.
The Technical Vault
By SOSCleanroom
Short-Arc Mercury Engineering
Optics & Alignment Power & Ballast Safety & Handling
Partner Insight: 40+ Years in Specialty Lighting Distribution
SOSCleanroom (Specialty Optical Systems, Inc.) has been distribution partners for over 40 years. In short-arc systems, replacement accuracy depends on matching the correct interfaces: electrical (100W/20V + ballast/igniter), mechanical (socket/basing + envelope), and optical (arc position in the lamp house).
Quick Specs
Product / Ordering Code Ushio USH102D | SKU: USH102D (5000273)
Lamp Type / Technology Mercury short-arc (HID) | High-radiance UV/visible arc source
Wattage / Voltage 100W / 20V
Physical Envelope Length: 3.54 in | Diameter: 0.39 in
Average Life 200 hours
Socket / Basing Note Often referenced as SFa7.5-2; verify your OEM lamp house requirement
How Short-Arc Mercury Lamps Work (Engineering-Level View)
A short-arc mercury lamp is a high-intensity discharge (HID) source. Light is generated by a plasma arc struck across a very small electrode gap inside a quartz (fused silica) arc tube. Starting requires a dedicated igniter that applies a high-voltage pulse to initiate conduction. Once the arc forms, current heats the plasma intensely, mercury transitions into vapor, and the lamp reaches an operating state where output is dominated by mercury’s strong UV/visible spectral lines plus a continuum component.
The “short-arc” advantage is radiance: electrical power is concentrated into a tiny arc volume, creating a very small, bright source that optical systems can efficiently collect and image. In microscopy, that compact source is key to delivering high excitation intensity into the condenser/light path with good coupling