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Ushio 200D Short Arc Mercury Lamp

Ushio USH200DP 200W Short Arc Mercury Lamp

$263.00
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SKU:
USH200DP (5000276)
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Product Description
High-luminance 200W short-arc mercury illumination for microscopy, diagnostics, and analytical instruments.
SOSCleanroom
Overview

The Ushio USH200DP is a 200W short-arc mercury lamp engineered for tightly confined plasma discharge and high luminance in UV/visible regions, supporting optical systems that rely on a compact, high-radiance arc source. This model is commonly used in microscopy, diagnostic, and industrial analytical equipment. SKU: USH200DP (5000276).

Key Highlights
  • Manufacturer Ordering Code: 5000276
  • Wattage / Voltage: 200W / 57V
  • Optical Output: 10,000 lumens
  • Average Life: 1,000 hours
  • Dimensions: Length 128mm; Diameter 16mm
  • Cold Arc Gap: 2.8mm (critical for optical focus compatibility)
Typical Applications
  • Microscopy illumination systems (instrument-specific)
  • Diagnostic and industrial analytical equipment
  • Spectrofluorometers, optical comparators, and UV curing systems (model-dependent)
Handling Tip 
Short-arc mercury lamps operate at high temperature and high internal pressure and require an OEM-rated 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.
Cross-Reference Notes
Common cross-references include: Osram HBO200W/2L1, Nikon 78560, Olympus 8-B190, Leitz/Wild 050-620, and Zeiss 380018-4070. Best practice: qualify replacements by the manufacturer code and critical specs (200W/57V, envelope dimensions, and arc geometry) to ensure optical and mechanical compatibility.
About Ushio
Ushio is a global photonics and specialty lighting company focused on “Applying Light to Life,” supplying light sources and light-based solutions across industrial markets (including semiconductor-related applications), visual imaging, and life sciences.
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 by Q4 of the fiscal year ending 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 (200W/57V, arc geometry, and envelope dimensions) to maintain continuity.
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 instrument OEM requirements (wattage class, voltage, ballast/igniter requirements, 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. With short-arc mercury systems, replacement success depends on matching the correct interfaces: electrical (wattage/voltage + ballast/igniter), mechanical (envelope + lamp house seating), and optical (arc position relative to the reflector/collector).
Quick Specs
Product / Ordering Code Ushio USH200DP | SKU: USH200DP (5000276)
Lamp Type / Technology Mercury short-arc (HID) | High-luminance UV/visible arc source
Wattage / Voltage 200W / 57V
Optical Output 10,000 lumens
Arc Geometry Cold arc gap: 2.8mm (optical coupling-critical)
Physical Envelope Length: 128mm | Diameter: 16mm
Average Life 1,000 hours
How a 200W Short-Arc Mercury Lamp Produces Light
A short-arc mercury lamp generates light from a plasma arc struck across a small electrode gap inside a quartz (fused silica) arc tube. A dedicated igniter applies a high-voltage pulse to initiate conduction; once struck, regulated current heats the plasma intensely, mercury vapor pressure rises, and output is dominated by mercury’s characteristic UV/visible spectral lines plus a continuum component. At 200W, the system’s thermal and electrical design becomes even more important: the lamp house must manage higher heat flux while holding the arc in the correct optical position.
Optics & Alignment: Why Arc Gap and Seating Matter
  • Arc as the “source”: the arc, not the outer envelope, is what the reflector/collector images into your optical path.
  • Cold arc gap (2.8mm): a key proxy for arc geometry—instrument lamp houses and reflectors are designed around where that arc forms and stabilizes.
  • Seating repeatability: mechanical seating controls arc placement; small shifts can move the arc off the reflector focus, reducing delivered irradiance and uniformity.
  • Thermal management at 200W: airflow and shielding in the lamp house are engineered around the correct envelope size (128mm x 16mm). Near-fit substitutions can disrupt cooling and shorten lamp life.
Power & Ballast Engineering (System-Level Requirement)
Once established, an arc behaves like a negative-resistance load. Without current regulation, increasing current can drop arc voltage and cause runaway. That is why short-arc mercury lamps require an OEM-specified ballast (current control) and igniter (starting pulses).
  • Current regulation: stabilizes radiance and arc position; reduces electrode overstress.
  • Ripple control: electrical ripple can become optical ripple (intensity instability), which can present as flicker or measurement noise.
  • Warm-up: allow the lamp to reach steady-state before calibration or critical imaging.
  • Cool-down / re-strike: after shut-down, internal pressure remains high—follow OEM cool-down intervals before restart.
Cross-Reference Discipline (Minimize Replacement Risk)
Cross-reference short-arc mercury lamps by the interfaces and arc geometry—not by appearance.
  • Known equipment references (examples): Osram HBO200W/2L1; Nikon 78560; Olympus 8-B190; Leitz/Wild 050-620; Zeiss 380018-4070.
  • Qualification checklist: confirm 200W/57V, envelope (128mm x 16mm), and arc geometry (2.8mm) plus ballast/igniter requirements from your OEM.
  • Recordkeeping: keep USH200DP / 5000276 in maintenance logs for traceability.
Safety Engineering: UV, High Voltage, High Pressure, and Mercury
  • UV exposure: operate only in the OEM-rated housing; do not defeat interlocks.
  • High-voltage ignition: igniters generate high-voltage pulses—use lockout/tagout practices during service.
  • High pressure: allow full cool-down before handling; follow OEM protective measures and site EHS procedures.
  • Mercury: dispose per facility and local regulations; follow site response procedures if breakage occurs.
Cleanroom Considerations (Controlled Environments)
  • Particle control: open packaging away from airflow paths; prevent fibers/debris entering lamp housings and optical cavities.
  • Quartz cleanliness: residues can bake-on under UV/heat—use clean nitrile gloves and a cleanroom-grade lint-free wipe.
  • Stability discipline: log lamp hours and replace on schedule to protect repeatability and reduce end-of-life instability.
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 short-arc mercury systems, confirm OEM requirements (wattage class, ballast/igniter compatibility, lamp orientation, reflector geometry, and safety housing/interlocks) prior to installation.