Ushio 50W 13.8V GX5.3 EPZ 1000350 Halogen Projector Lamp

Ushio 1000350 EPZ JCR13.8V-50W – 50W 13.8V MR16 Halogen Photo-Optic Lamp | GX5.3 | 3150K | 100 CRI | 1,000 Hours

The Ushio 1000350 EPZ (JCR13.8V-50W) is a 50W halogen photo-optic lamp with a GX5.3 bi-pin base, operating at 13.8V — not standard 12V. It is designed for precision medical, diagnostic, dental, fiber-optic, and specialty AV projection equipment that requires exact voltage calibration. The lamp features a 50mm specular dichroic MR16 reflector, CC-6 coiled-coil filament, and produces 80 initial lumens at 3150K with 100 CRI. Burn position is base down to horizontal only. Please verify the equipment’s power supply outputs exactly 13.8V before ordering — this lamp is not interchangeable with standard 12V MR16 halogen lamps.

Technical Specifications

Product Overview

The Ushio 1000350 EPZ is a precision halogen photo-optic lamp engineered for specialty equipment that requires an exact 13.8V calibrated supply — medical endoscopy towers, surgical overhead illuminators, laboratory microscopes, dental inspection systems, film projection arrays, and architectural fiber-optic light engines among them. The 13.8V rating distinguishes this lamp from standard 12V MR16 halogen lamps: running it on a nominal 12V transformer or on 120V will produce incorrect output or damage the lamp, while running a standard 12V lamp in a 13.8V system will shorten life significantly.

The 50mm specular dichroic MR16 reflector projects focused visible light forward while allowing infrared heat to pass rearward through the reflector body, reducing thermal load on heat-sensitive optical components behind the lamp. The CC-6 coiled-coil filament provides a compact, stable arc source suited to the precise optical coupling demands of projection and fiber-optic systems. At 3150K and 100 CRI, the lamp produces full-spectrum white light with no color distortion, which is critical for color-accurate diagnostic and imaging applications.

Rated life is 1,000 hours under constant-voltage conditions. Voltage regulation is important: halogen lamp life is highly sensitive to supply voltage — even modest overvoltage significantly shortens life, while undervoltage reduces output and can cause blackening. Ensure the equipment’s internal power supply is regulated at 13.8V.

Compatible Applications

• Medical endoscopy and surgical illumination equipment
• Laboratory clinical microscopy stages
• Dental inspection and operatory lighting systems
• Fiber-optic light engines and architectural fiber-optic illuminators
• Film and specialty audio-visual projection equipment
• Any precision optical instrument specifying an EPZ-coded 13.8V GX5.3 halogen lamp

Before Ordering – Verify

• This lamp operates at 13.8V, not 12V. It is not interchangeable with standard 12V MR16 halogen lamps. Verify that the equipment’s internal power supply or transformer outputs exactly 13.8V before ordering — an incorrect supply voltage will produce wrong color temperature, reduce life, or damage the lamp.
• This lamp is not compatible with 120V line voltage. It requires a regulated 13.8V constant-voltage power supply internal to the equipment.
• Confirm the equipment socket is GX5.3 bi-pin (2-pin round) — not GU5.3, G5.3, or GU10, which are physically similar but dimensionally different in pin spacing or configuration.
• Confirm the equipment specifies the EPZ ANSI code or the JCR13.8V-50W ordering code, as multiple MR16 photo-optic lamps exist at similar wattages and voltages with different ANSI designations and focal specifications.
• Confirm the burn position is base-down to horizontal; vertical base-up operation is not approved for this lamp and will shorten rated life.
• Confirm the calibrated focal distance of 4.25″ (108mm) matches the equipment’s optical design; photo-optic replacement lamps must match the original focal specification or optical alignment will be degraded.
• Lamp replacement in medical and dental equipment should follow the equipment manufacturer’s maintenance protocol and any applicable regulatory requirements for clinical instrument servicing.

Safety and Handling Guidelines

• Isolate the equipment from its power source and allow a minimum 20-minute cool-down before relamping; photo-optic halogen lamps operate at high surface temperatures
• Do not handle the quartz glass envelope with bare skin; oils from skin contact bond to the quartz surface during thermal cycling, creating hot spots that accelerate envelope failure. Use clean cotton gloves, a lint-free cloth, or the lamp’s original protective sleeve. If contact occurs, clean with isopropyl alcohol and allow to dry fully before powering the fixture
• This lamp contains a pressurized quartz envelope; national life safety codes require installation inside an enclosed, approved luminaire housing to contain envelope fragments in the event of failure — do not operate without a protective enclosure
• Ensure fixture ventilation channels and any fan cooling paths remain clear and unobstructed during operation
• Do not exceed the equipment’s rated input voltage; overvoltage significantly shortens lamp life

Compliance

• ANSI EPZ coded lamp
• For use in equipment specifically designed for EPZ / JCR13.8V-50W lamps
• Installation in medical, dental, or laboratory equipment must follow the equipment manufacturer’s service procedures and any applicable regulatory requirements

Ordering Information

• Manufacturer Part Number: 1000350
• ANSI Code: EPZ
• Ordering Code: EPZ JCR13.8V-50W
• UPC: 048777122969
• Case Quantity: 10 per case
• Reported cross-references (unverified — confirm before substitution): Osram Sylvania 54743 EPZ / 64608; Philips 13189 / 31496-3; GE/Burton Medical 43948 Q50MR16 (EPZ) / 0001116

For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.