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

The Ushio 1000350 EPZ JCR13.8V-50W Lamp is a premium, precision-engineered photo-optic halogen projector lamp designed for demanding medical, diagnostic, and specialty audio-visual projection equipment. Operating at 50 watts over a discrete 13.8-volt low-voltage input, this specialized MR16 lamp features a clear specular dichroic reflector engineered to project high-intensity, focused illumination while dissipating rear thermal energy safely away from sensitive fiber-optic component tracks. Outfitted with an industry-standard GX5.3 bi-pin base and calibrated to emit a precise 3150K warm-neutral output with a 100 CRI rating, it serves as the definitive OEM-grade replacement module for certified clinical and theater hardware.

ADL Supply Expert Application & Replacement Guide

The Ushio EPZ (1000350) is a highly specialized photo-optic lamp extensively integrated into high-precision technical systems including medical endoscopy tower instrumentation, surgical overhead lighting assemblies, laboratory clinical microscopy stages, dental inspection lamps, film projection arrays, and architectural fiber-optic light engines. This lamp operates on an exact current-stabilized 13.8V low-voltage input — it is completely incompatible with standard 120V line voltage and will not function correctly on standard 12V halogen transformer tracks; technicians must verify that the equipment's internal power supply or step-down transformer outputs exactly 13.8V before insertion. The clear quartz envelope requires seating inside an un-shunted GX5.3 bi-pin socket within a fully enclosed luminaire housing — bare-envelope operation without a protective shield is a life safety code violation due to the pressurized quartz envelope's fragmentation risk at operating temperature.

Detailed Product Specifications

• Brand: Ushio
• Product Line Series: High-Precision Photo-Optic Halogen
• Manufacturer Part Number: 1000350
• Ordering Code: EPZ JCR13.8V-50W
• ANSI Code: EPZ
• UPC Barcode: 048777122969
• Core Technology: Tungsten-Halogen Clear Dichroic Reflector Capsule
• Wattage: 50W
• Voltage: 13.8V
• Current: 3.62 Amperes
• Initial Lumens: 80 lm
• Reflector Design: 50mm Specular Dichroic MR16
• Color Temperature (CCT): 3150K Warm-Neutral White
• Color Rendering Index (CRI): 100 Ra
• Filament Type: CC-6 Precision Coiled Coil
• Base Type Configuration: GX5.3 (2-Pin Round)
• Maximum Overall Length (MOL): 1.752 inches (44.5mm)
• Reflector Diameter: 2.000 inches nominal MR16 (50.8mm)
• Calibrated Focal Distance: 4.25 inches (108mm)
• Rated Average Lifespan: 1,000 Hours (Constant Voltage)
• Burn Position: Base Down to Horizontal (BDTH) — vertical base-up not approved
• Case Quantity: 10 units per case

Operation, Safety & Mounting Compliance

Thermal Envelope Protection & Cooling Requirements

High-output photo-optic projection lamps reach intense internal pressures and localized thermal limits during operation. Always isolate the equipment's power input and allow a minimum 20-minute cool-down period before performing any relamping or maintenance procedures. This lamp is approved for base-down to horizontal burn positions only — vertical base-up operation is not permitted and will accelerate filament fatigue and premature failure. Ensure all fixture ventilation channels and fan cooling paths remain clear and unobstructed to prevent thermal stress accumulation at the rear quartz pin seals.

Quartz Glass Handling & Contamination Prevention

Never handle the quartz glass envelope with bare skin. Skin oils deposit alkaline residues that bond permanently to the quartz surface during thermal cycling, creating localized hot spots that accelerate envelope devitrification, micro-fracture propagation, and premature rupture under operating pressure. Always relamp using clean cotton gloves, a lint-free microfiber cloth, or the lamp's original protective plastic sleeve. If skin contact occurs before installation, clean the envelope thoroughly with isopropyl alcohol and allow to dry completely before powering the fixture.

Specialty Equipment Cross-Reference Data

• Osram Sylvania: 54743 EPZ / 64608 50W 13V
• Philips Lighting: 13189 / 31496-3
• GE Lighting / Burton Medical: 43948 Q50MR16 (EPZ) / 0001116
• Legacy Cross-Reference: Direct OEM-grade replacement for EPZ-coded 13.8V halogen photo-optic lamp positions across medical, dental, and specialty AV projection hardware

Bulk Commercial Lighting Supply & Project Support

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For formal wholesale inquiries, volume pricing modifications, or manufacturer spec sheet documentation, reach our commercial branch directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.