SOSCLEANROOM | FORMER SOSLIGHTBULBS.COM | SPECIALTY LAMP SELECTION
Specialty Lamps & Light Sources: Find the Correct Product on SOSCleanroom or LampTech.
SOSLightBulbs.com is now represented on SOSCleanroom.com. Shop verified Ushio, Osram/Sylvania and SCHOTT product listings for microscopes, precision inspection, semiconductor processing, short-arc optics, halogen and UV-C lighting—plus direct links to LampTech.com for miniature LEDs, indicator bulbs and specialty lamps. Use the technical comparisons to qualify the right replacement by model, voltage, base, optics and equipment requirements.
See products on both sites ↓ Find the correct lamp ↓Start here
Find your replacement by instrument, lamp code and application.
The former SOSLightBulbs.com storefront is represented on SOSCleanroom.com. The separate LampTech.com catalog carries additional specialty lighting and miniature-lamp choices. This page is a navigation and technical-qualification hub—it routes buyers to actual product listings rather than promising that every lamp is appropriate for every cleanroom.
SOSCLEANROOM
Shop laboratory, microscope & semiconductor lamps
LAMPTECH.COM
Shop specialty bulbs & miniature indicators
HOW TO BUY
Identify first, then verify
Cross-site shopping is clearly labeled
Find the correct path
A quick lamp-technology and application selection matrix.
| Your application | What to confirm | Verified shopping destination |
|---|---|---|
| Microscope halogen bulb | ANSI code (EKE/EFR/EJA/DDL), 12/15/21V, base, reflector, filament position | SOSCleanroom halogen microscope lamps |
| Fluorescence microscopy / UV optics | Short-arc Hg or Xe; ballast, lamp geometry, spectral output, ignition | SOSCleanroom short-arc catalog · LampTech short-arc lamps |
| Stepper, mask aligner, lithography | Exact tool/model, lamp part number, arc gap, UV wavelengths, cooling | SOSCleanroom semiconductor lamps · LampTech semiconductor lamps |
| Inspection / stereo microscopy | Illuminator, compatible fiber guide, output, dimming, workstation geometry | SCHOTT illuminators at SOSCleanroom |
| Industrial indicator / control panel | Miniature base, voltage range, polarity, color, brightness and physical clearance | LampTech miniature LEDs |
| UV-C treatment fixture | Lamp size, ballast/base, wavelength, irradiance and engineered enclosure | SOSCleanroom UV-C lamps · LampTech germicidal |
| Semiconductor thermal process | Reactor model, heater voltage/current, termination, wavelength and thermal profile | Ushio QIH480-6000ASM |
This matrix is a navigation aid, not a compatibility certificate. Never substitute a lamp based only on similar appearance, nominal wattage or a matching brand.
SOSCleanroom catalog
Go directly to the right SOSCleanroom lighting category.
Specialty bulbs & lamps
Specialty bulbs & lamps
Microscope replacement halogen
Microscope replacement halogen
Semiconductor lighting
Semiconductor lighting
UV germicidal bulbs
UV germicidal bulbs
SCHOTT LED illuminators
SCHOTT LED illuminators
Ushio manufacturer catalog
Ushio manufacturer catalog
LampTech catalog
Browse LampTech by form factor and service application.
Miniature LEDs
Miniature LEDs
MR16 halogen lamps
MR16 halogen lamps
Bi-pin halogen lamps
Bi-pin halogen lamps
Semiconductor short-arc lamps
Semiconductor short-arc lamps
Microscope lamps
Microscope lamps
Germicidal lamps
Germicidal lamps
Same part number, two catalogs
Directly compare select product listings on both sites—without confusing separate checkouts.
| Lamp / model | SOSCleanroom product | LampTech product | Buyer verification |
|---|---|---|---|
| SOS EKE/FA — 150W / 21V | SOSCleanroom EKE/FA | LampTech EKE/FA | MR16 faceted reflector, GX5.3, 21V; optical beam requirements |
| Ushio USH200DP — 200W | SOSCleanroom USH200DP | LampTech USH200DP | Mercury arc geometry, igniter, mounting and specific OEM model |
| Ushio USH350DP — 350W | SOSCleanroom USH350DP | LampTech USH350DP | DP suffix, 5000506 code, lamp orientation and cooling |
| Osram HBO350W — 350W | SOSCleanroom HBO350W | LampTech HBO350W | 69226 manufacturer code; lamp house and tool-specific requirements |
Product identity is not the same as a universal replacement
Catalog terminology discrepancy: USH350DP
SOSCleanroom product listings
Microscope and fiber-optic halogen lamps: direct product links.
Instrument halogen lamps produce broad-spectrum visible illumination and substantial heat. Most are application-specific, not household bulbs. EKE (21V) and EFR (15V) may appear visually similar, yet they are not safe electrical substitutes.
Halogen / microscope
Ushio EKE — 150W / 21V MR16
Halogen / optical inspection
Osram/Sylvania 64634 EFR — 150W / 15V MR16
Instrument halogen
Osram/Sylvania HLX 64260 — 30W / 12V
Halogen / faceted reflector
SOS EKE/FA — 150W / 21V
Halogen / MR16
Osram/Sylvania EKE — 150W / 21V
SOSCleanroom product listings
Short-arc mercury, mercury/xenon and xenon lamps: direct links.
Short-arc lamps provide high radiance from a compact plasma region and normally demand specialized power supplies, high-voltage ignition, shielding, cooling and an orientation approved by the equipment manufacturer.
Short-arc mercury
Ushio USH200DP — 200W mercury arc
Short-arc mercury
Ushio USH350DP — 350W short arc
Short-arc mercury
Ushio USH350DS — 350W mercury arc
Microlithography / short arc
Osram HBO350W — 350W mercury arc
Photolithography
Ushio USH1000KS — 1000W stepper lamp
Deep-UV source
Ushio UXM-Q256BY — Hg/Xe DUV arc
Short-arc xenon
Ushio UXL-S75MA — 75W xenon arc
Semiconductor lighting
Photolithography exposure and thermal-process lamp selection.
Photolithography demands more than nominal brightness: spectral output at the tool’s exposure wavelengths, arc geometry, alignment, stabilization, lamp aging, collector optics, and process-dose repeatability are relevant. Quartz infrared lamps in epitaxy equipment operate differently: they are thermal emitters used to deliver controlled heat, not a substitute for UV exposure lamps.
Photolithography
Ushio USH1000KS — 1000W stepper lamp
Deep-UV source
Ushio UXM-Q256BY — Hg/Xe DUV arc
Semiconductor thermal process
Ushio QIH480-6000ASM — infrared reactor
Microlithography / short arc
Osram HBO350W — 350W mercury arc
Semiconductor selection rule
For additional technical context, see SOSCleanroom’s semiconductor Ushio stepper-lamp article and Semiconductor Industry.
SOSCleanroom product listings
SCHOTT LED inspection and microscope illuminators.
SCHOTT systems are illuminator assemblies, not replacement lamps. Selection depends on source output, light-guide interface, guide geometry, task distance, color temperature, dimming and physical integration. A remotely located light engine can help manage heat at the inspected part, but cleanroom deployment still requires installation and cleaning assessment.
LED fiber-optic source
SCHOTT KL 300 LED — source
LED fiber-optic source
SCHOTT KL 1600 LED — source
LED fiber-optic source
SCHOTT CV-LS 6000K — source
LED fiber-optic source
SCHOTT CV-LS 3000K — source
SINGLE GUIDE
Directional incident lighting
DUAL GUIDE
Two-angle illumination
RING LIGHT
More uniform field illumination
UV-C germicidal bulbs
UV-C selection requires an engineered system, not simply the correct lamp length.
UV-C lamps such as G30T8 are used inside designed fixtures and reactors, where dose at the actual target depends on wavelength, intensity, geometry, exposure time, aging and shadowing. A replacement bulb by itself does not establish effective microbial inactivation or regulatory compliance.
UV-C germicidal
Osram/Sylvania G30T8 — 30W UV-C
UV-C exposure hazard
Compare SOSCleanroom UV germicidal lamps with LampTech germicidal products and validate the original OEM fixture specifications.
LampTech direct product listings
Specialty short-arc lamps and miniature LED equivalents.
LampTech offers miniature indicator choices and specialty optical lamps that may not be the best fit for SOSCleanroom’s technical catalog navigation. The exact product destinations below open LampTech’s separate storefront.
Halogen reflector
SOS EKE/FA 150W MR16
Short-arc mercury
Ushio USH200DP — 200W mercury
Short-arc mercury
Ushio USH350DP — 350W mercury
Semiconductor / arc
Osram HBO350W — mercury short arc
Microscopy / arc
Osram HBO50W/AC L1 — 50W mercury
Short-arc xenon
Osram XBO75W2 — 75W xenon
Miniature wedge LED
Lamp #194 LED equivalent
Miniature BA15S LED
Lamp #232 LED equivalent
Miniature BA15D LED
Lamp #1142 LED equivalent
Miniature groove LED
Lamp #334 LED equivalent
LED is not always a drop-in replacement
Technical fundamentals
How the main specialty lighting technologies differ.
| Technology | Light-generation principle | What buyers must qualify |
|---|---|---|
| Tungsten halogen | Electrically heated tungsten filament; halogen cycle helps reduce envelope blackening | Voltage, wattage, base, filament position, reflector, color, heat and life |
| Mercury short arc | High-pressure plasma arc with concentrated UV/visible spectral lines | Lamp part number, ignition voltage, ballast, arc gap, orientation, UV shielding |
| Xenon short arc | Compact high-pressure discharge with broad-spectrum output and defined arc size | Current regulation, ignition, optical alignment, pressure-safe housing |
| Mercury/xenon | Mixed-gas discharge used in certain high-intensity UV/visible optical systems | Spectral compatibility, envelope and power supply, source geometry |
| Quartz infrared heater | Tungsten-halogen filament optimized to transfer radiant heat | Reactor/tool match, operating current, terminals, thermal profile, mounting |
| UV-C germicidal | Discharge source emitting germicidal-band UV-C (design-dependent) | Ballast, UV spectrum, fixture shielding, dose validation and service life |
| Fiber-delivered LED | Solid-state LED source coupled into compatible fiber light guide | Spectral balance, guide interface, intensity stability, control integration |
| Miniature LED indicator | Solid-state LED intended for indicator/signal circuits | Base, voltage, polarity, resistor/driver compatibility, viewing angle and color |
Part-number cross-reference
Eleven specifications to collect before choosing a replacement.
| Specification | Why it matters |
|---|---|
| 1. Manufacturer part number | The full suffix/ordering code may distinguish electrical and optical designs. |
| 2. OEM equipment model | Manufacturer-approved lamps can change with tool sub-assembly or year. |
| 3. Voltage / power | Mismatches can damage power supplies, overheat optics, or fail to ignite. |
| 4. Base/contact geometry | Bayonet, wedge, groove, bi-pin and specialty ceramic bases are distinct. |
| 5. Envelope and reflector | Diameter, length, MR16 profile and reflector finish affect mounting and beam. |
| 6. Source center/arc gap | Filament light-center length and short-arc position determine optical coupling. |
| 7. Spectrum / CCT | Exposure chemistry and imaging contrast may depend on wavelengths. |
| 8. Ignition and ballast | Arc lamps need purpose-designed drivers, interlocks and starting conditions. |
| 9. Operating orientation | Arc stability, lamp life and heat can change with burning position. |
| 10. Cooling and clearance | High-temperature lamps and LED housings require correct thermal design. |
| 11. Maintenance and documentation | Trace lot, rated life, SOP changes, lamp hours and approved substitutions. |
When requesting a cross-reference, supply photographs of the lamp label and its base, the OEM manual page and, where safe, the original model/part number. Do not ask technicians to dismantle energized equipment simply to identify a part.
Lamp code education
Why EKE, EFR, USH, HBO, XBO and UXL codes cannot be treated as generic wattage classes.
EKE / EKE-FA
Low-voltage MR16 reflector families
EFR
MR16 150W class with different voltage
USH / HBO
Short-arc mercury source families
XBO / UXL
Short-arc xenon source families
SCHOTT KL / CV-LS
Illuminator platform designation
G-series UV-C
Germicidal fluorescent-type lamps
Avoid misleading ISO claims
Photolithography engineering
How exposure-lamp condition can affect tool repeatability.
Stepper and mask-aligner optical systems use a controlled illumination path to deliver repeatable exposure energy to photoresist. Source aging, cathode/anode wear, alignment, collector optics, shutter operation, filters and dose monitoring can all affect process performance.
OUTPUT
Dose and spectral behavior
GEOMETRY
Arc position and collector optics
POWER
Lamp current and ignition
MAINTENANCE
Record running hours and trends
Related article: Stepper Lamp Article — Semiconductor Ushio. Candidate parts: USH1000KS, HBO350W and USH350DP.
Inspection and microscopy
Choose lighting by contrast and repeatability, not maximum brightness.
For stereo microscopes, optical comparators and QA stations, illumination direction and geometry can matter more than peak lamp lumens. An angled single guide may accentuate scratches, while dual guides or a ring light can improve visibility of complex geometry.
CONTRAST
Shadows versus uniformity
COLOR
White balance and color temperature
DIMMING
Maintain repeatable settings
CONTAMINATION
Qualify light-source placement
Selected products: SCHOTT KL 300 LED, SCHOTT KL 1600 LED and Osram HLX 64260.
Miniature signal and panel lighting
Replace miniature lamps and evaluate LED conversions carefully.
LampTech specializes in indicator and miniature lamp families organized by bayonet, flange, groove, slide and wedge base. For instrumentation, elevators, industrial control panels and equipment indicators, electrical and visual compatibility must both be preserved.
| Check | Typical risk if skipped | Starting link |
|---|---|---|
| Voltage and AC/DC | Failure to light, overcurrent or controller interactions | LampTech #194 wedge LED |
| Single versus double contact | Incorrect circuit operation or no power path | LampTech #232 BA15S / 1142 BA15D |
| Polarity and dimming | LED works in one polarity or flickers with instrument logic | LampTech #334 groove LED |
| Lens and viewing angle | Indicator may be too bright, too dim, or wrong hue | LampTech miniature LED category |
| Mechanical envelope | Bulb collides with panel legend or diffuser | LampTech mini LEDs |
Regulated or validated systems
Safety & installation
Specialty lamps can involve heat, high pressure, UV, mercury and high-voltage ignition.
BEFORE SERVICE
De-energize and cool
QUARTZ ENVELOPE
Keep optical surfaces clean
SHORT ARC
Use protective enclosures
UV-C
Prevent exposure
MERCURY
Handle disposal appropriately
REPLACEMENT
Requalification when needed
Detailed safety instructions belong to the lamp manufacturer’s data sheet, the actual fixture or equipment manual, and site EHS requirements. This page is not a lamp-installation procedure.
Cleanroom maintenance
Prevent a routine lamp replacement from becoming a contamination event.
| Stage | Recommended control |
|---|---|
| Planning | Schedule service in an approved maintenance window; consult cleanroom entry requirements and equipment SOP. |
| Material staging | Remove excessive cartons outside classified rooms; verify the exact part and protective package condition. |
| Handling | Use qualified gloves and low-lint wipes appropriate for the optical surface; do not scratch coated components. |
| Tool opening | Protect adjacent critical components and minimize particle-generating activity. |
| Installation | Follow OEM instructions for seating, torque/retainers, orientation, cooling and electrical connections. |
| Return to service | Perform needed cleaning, line clearance, particle/airflow assessment and process checks. |
| Records | Log part number, lot/serial if supplied, installation date, running hours and validation result. |
Relevant consumables and educational resources: Cleanroom glove selection, Cleanroom wipes and wipers and Technical Vault.
Technical sourcing
A seven-step procedure for approving lamps and substitutions.
STEP 01
Identify the installed equipment
STEP 02
Capture electrical requirements
STEP 03
Capture optical geometry
STEP 04
Compare documented options
STEP 05
Test in the real tool
STEP 06
Approve purchasing data
STEP 07
Monitor and requalify changes
Not all lamps are physically or functionally interchangeable
Troubleshooting
Problems that appear to be lamp failures may have another cause.
| Symptom | Possible factors | Recommended response |
|---|---|---|
| Lamp does not start | Wrong supply, starter/igniter failure, connector issue, interlock fault | Stop and follow qualified electrical troubleshooting; verify lamp model before replacing. |
| Uneven inspection field | Misaligned guide, dirty optics, wrong reflector geometry, lamp seating | Check optical alignment and OEM service procedures. |
| Lower exposure dose | Lamp aging, filtered optics, current regulation, cooling, calibration | Review recorded intensity/dose trends; use equipment diagnostic checks. |
| Short halogen life | Contamination, voltage error, vibration, poor cooling, incorrect lamp | Inspect supply and lamp match before changing brands. |
| UV-C output insufficient | Lamp aging, fouled sleeves, wrong wavelength, poor geometry | Evaluate system fluence using the qualified measurement method. |
| LED indicator flicker | Supply ripple, dimmer incompatibility, polarity or electronic load | Check electrical compatibility and instrument design. |
| Frequent arc instability | Power regulation, cooling, orientation, arc wear or ignition system | Escalate to trained service engineering; do not modify the lamp housing. |
Purchasing strategy
Plan lamp inventory by operational criticality and approved equivalents.
Technical lamp programs have different economics from generic lighting. A low-cost substitute can be expensive if it delays tool qualification, causes inspection shifts, or creates rework. Prioritize equipment uptime and tested compatibility.
| Program field | What to record |
|---|---|
| Equipment / site | Tool name, location, critical process and model number |
| Manufacturer and approved part | Original OEM number; accepted substitute(s) after engineering qualification |
| Electrical / optical criticality | Voltage, power, base, orientation, arc/filament position, spectral needs |
| Normal usage | Lamp hours, typical replacement interval, failure data |
| Purchase planning | Annual demand, lead time, spare count, storage and handling |
| Supplier routing | SOSCleanroom or LampTech exact product URL; avoid mixing purchase orders |
| Quality records | Installation date, lot/serial if supplied, change-control and performance checks |
For quotation assistance, use SOSCleanroom quote request. For LampTech-specific orders, begin with LampTech customer service or the exact LampTech product page.
Practical examples
Four examples of selecting the correct destination and qualification route.
SCENARIO A
Microscope EKE lamp
SCENARIO B
350W short-arc mercury source
SCENARIO C
Stereo microscope inspection
SCENARIO D
Control-panel indicator conversion
Frequently asked questions
Answers for lamp buyers, technicians and procurement.
Is SOSLightBulbs.com now part of SOSCleanroom?
The current SOSCleanroom page states that SOSLightBulbs.com is now SOSCleanroom.com. This guide routes customers to the lighting products actually listed in SOSCleanroom’s catalog.
Why does this page also link to LampTech.com?
LampTech has a separate specialty-lamp catalog, including miniature LED and industrial indicator products. It is a different website and shopping cart, even where a model is also listed at SOSCleanroom.
Do both storefronts carry the same inventory or prices?
Do not assume so. Check the live product listing and terms on the site where the order will be placed.
Can EKE and EFR MR16 bulbs be interchanged?
Not on the basis of size. The SOSCleanroom EKE example is 21V while its 64634 EFR example is 15V, and other optical differences may apply.
Does the same lamp wattage mean the same arc geometry?
No. Arc position and gap, envelope, orientation, electrodes and supply requirements can vary across lamps that have the same nominal power.
What information is needed for a semiconductor lamp replacement?
Provide tool model, full lamp code and suffix, original technical data, power/ignition conditions, geometry, cooling and any validation requirements.
What is the difference between an arc lamp and a halogen lamp?
A short-arc source uses a high-pressure electrical discharge; a tungsten halogen lamp uses a heated filament. They have different power, spectral, thermal and safety characteristics.
Are SCHOTT LED illuminators direct halogen bulb replacements?
No. The listed SCHOTT products are illuminator systems. Confirm light guides, electrical inputs and workstation integration.
Can an LED panel indicator replace any miniature incandescent?
No. Verify voltage, current, contact configuration, polarity, dimming, viewing angle, brightness, color and system approval.
Are all lamps labeled for cleanroom use sterile?
No. Room classification and lamp sterility are unrelated. Qualify product handling, service procedure, exposed materials and airflow impact.
Can I use a UV-C lamp without a protective fixture?
No. UV-C can damage eyes and skin. Operate only in equipment designed to prevent unsafe exposure and to deliver a validated dose.
Why is lamp orientation important?
Some discharge lamps have restricted burning positions because arc behavior and cooling depend on geometry. Follow the specific model documentation.
What is the difference between USH350DP and USH350DS?
They are distinct manufacturer codes. Do not assume an interchangeable mechanical or optical fit; verify the exact equipment requirement.
Why might a new bulb give different inspection results?
Reflector style, spectral output, alignment, brightness, camera settings and thermal performance can change appearance; qualify the setup.
How should specialty lamps be handled?
Follow OEM electrical isolation, cool-down, pressure/UV safeguards and optical surface handling instructions. Use clean gloves or wipes only where approved.
How do I buy multiple sites’ approved lamps efficiently?
Maintain a controlled list of OEM parts, tool associations, suppliers, frequencies and approved alternates; send SOSCleanroom a quote request for SOS catalog items and handle LampTech items through LampTech.
Related SOSCleanroom resources
Explore lighting education, tool categories and technical standards.
Stepper lamp technical article
Stepper lamp technical article
Semiconductor industry
Semiconductor industry
Ushio brochures
Ushio brochures
Lighting categories
Lighting categories
Technical Vault
Technical Vault
Glove selection guide
Glove selection guide
Source and verification notes
Product specifications are sourced from the linked live catalogs.
| Source | How this guide uses it |
|---|---|
| SOSCleanroom SOSLightBulbs page | Legacy storefront notice and original page intent. |
| SOSCleanroom lighting catalog | Live lighting families and product destinations. |
| SOSCleanroom semiconductor catalog | Short-arc and thermal-process candidate listings. |
| SOSCleanroom SCHOTT listings | Illuminator families and product descriptions. |
| LampTech catalog | Separate mini-lamp, halogen and short-arc catalog navigation. |
| LampTech Ushio listings | Manufacturer code and direct counterpart product links. |
| LampTech EKE/FA | One exact paired example across stores. |
| LampTech #194 LED | Miniature LED indicator product example. |
Links were selected from directly located SOSCleanroom and LampTech product/category pages as of October 28, 2026. Published listings can change without notice. Exact instrument approvals, manufacturer technical specifications and maintenance requirements control final selection.
SOSCLEANROOM | SPECIALTY LAMP SOURCING & TECHNICAL SUPPORT
Have an OEM Lamp Code? We Can Help Find the Right Listing.
Share the exact lamp and equipment model, manufacturer number, voltage/wattage, base, source geometry, original application and expected annual usage. Review SOSCleanroom product listings or use LampTech’s separate specialty catalog. Final equipment qualification remains with the operator and OEM documentation.
Request an SOSCleanroom Quote → Open LampTech.com →SOSCleanroom: 800-443-7101 | LampTech: 1-800-533-7548
Technical and purchasing scope: Reviewed October 28, 2026. This page is an educational selection and cross-site navigation aid, not an OEM equipment approval, specification guarantee, cleanroom certification, electrical safety procedure, UV-C efficacy claim or replacement authorization. Always use current product literature, equipment service instructions and site engineering/EHS approvals. SOSCleanroom and LampTech have separate websites and checkout processes. Specifications, product status, availability and pricing may change.