Description
The Welch Allyn 3.5V Halogen HPX™ Replacement Bulb (03100-U6) is a high-performance diagnostic lamp engineered for use with a wide range of Welch Allyn otoscopes and ophthalmoscopes. Utilizing High Pressure Xenon (HPX™) technology, this bulb delivers a bright, white light that provides true tissue color visualization for accurate clinical assessment.
Designed to produce up to 30% more light output than standard halogen bulbs, the HPX™ lamp ensures consistent illumination throughout its service life. It is the trusted OEM replacement bulb for many Welch Allyn 3.5V diagnostic instruments used in hospitals, clinics, and medical offices.
Identification
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Product Identifier: 3.5V Halogen HPX™ Replacement Bulb
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Product Code: 03100-U6 (also known as 03100)
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Brand: Welch Allyn (Hillrom)
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Voltage: 3.5 Volts
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Wattage: Approx. 2.7 Watts
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Color Temperature: ~3250K (Cool White)
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Bulb Type: T1.5 Halogen / Xenon
Key Benefits
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HPX™ Xenon Technology: Provides brighter, whiter light for accurate diagnosis
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True Color Rendering: Maintains consistent color temperature over bulb life
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Enhanced Visibility: Improves visualization of ear and eye structures
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OEM Fit & Performance: Designed specifically for Welch Allyn optics
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Reliable Longevity: Built for dependable clinical use
Applications
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Diagnostic Otoscopes
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Pneumatic Otoscopes
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Operating Otoscopes
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Select 3.5V Ophthalmoscopes
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Tongue Blade Holders and Diagnostic Illuminators
Usage Guidelines
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Installation: Allow the old bulb to cool completely before removal. Insert the new bulb firmly and avoid touching the glass with bare fingers.
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Storage: Keep in original packaging until use to prevent damage.
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Disposal: Dispose of according to local electronic or medical waste regulations.
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Compatibility: Use only with Welch Allyn 3.5V power handles or transformer systems.
Certifications & Compliance
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Medical Grade Component
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CE Marked
Comparison with Non-OEM Bulbs
Genuine Welch Allyn HPX™ bulbs are precisely calibrated to the optical focal point and color index of Welch Allyn instruments. Generic halogen or LED alternatives often produce incorrect illumination, reduced brightness, or color distortion—compromising diagnostic accuracy.
Typical Users
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Physicians and General Practitioners
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ENT Specialists
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Medical Students
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Clinical Engineering & Biomedical Departments
Best Practices
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Always keep a spare bulb available to prevent exam room downtime
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Do not touch the bulb glass directly—finger oils reduce lifespan
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Verify voltage compatibility before installation