Overview
The General Electric EKE 21V 150W is a low-voltage halogen lamp engineered for high-fidelity illumination in precision optical and medical equipment. This MR16-style bulb operates at 21 volts and 150 watts, delivering reliable continuous-spectrum lighting with a typical rated life of 200–250 hours. The GX5.3 (2-pin) base ensures secure seating in standard sockets found across dental microscopes, surgical lights, fiber-optic systems, slide projectors, and optical inspection instruments.
Key Features
- Halogen technology: True continuous-spectrum output for accurate color rendering and superior light field uniformity
- 21V low-voltage design: Safe operation in medical and dental environments with reduced thermal stress
- MR16 reflector cup: Focused beam geometry optimizes brightness and uniformity for precision applications
- GX5.3 (2-pin) base: Compact, secure connection compatible with standard lamp holders
- 200+ hour rated life: Extended service intervals minimize replacement frequency
- Made in the USA quality: Manufactured to rigorous performance and safety standards
Technical Specifications
- Wattage: 150W (±10%, range 135–165W)
- Voltage: 21V
- Bulb Shape: MR16
- Base Type: GX5.3 (2-pin)
- Color Temperature: 3250–3400K
- Rated Life: 200–250 hours average
- Overall Length: 1.75 inches (44.5 mm)
- Filament Type: CC-6 tungsten
- Burn Position: Any (BD/HZ rated)
- Light Output: ~80 lumens (standard halogen halogen)
Typical Applications
The GE EKE lamp is widely used in:
- Medical & Dental: Microscopes, surgical illuminators, operatory lights, Bausch & Lomb systems
- Fiber-Optics: Light source modules for endoscopy and precision fiber-optic illumination systems
- Optical Instruments: Measurement equipment, optical comparators, and precision inspection lights
- Projection: 8mm slide projectors, movie projectors, and document cameras
- Industrial: Machine vision lighting, microscopy, and photographic applications
Compatibility & Replacements
Compatible With
- Bausch & Lomb microscope systems (models 31-31-52, 31-30-50)
- Dolan-Jenner light sources and illuminators
- Zeiss optical instruments (model 902-058, 99-70-07)
- Leitz/Leica microscope systems
- ACMI surgical light systems
- Burton Medical surgical lights
- Panasonic video monitoring systems
- Any lamp holder rated GX5.3 (2-pin), 21V–150W
Replaces / Drop-In Replacement For
- USHIO 1000306 (JCR21V-150W)
- GE 35200 EKE
- Sylvania EJA (fiber-optic variant)
- Multiple OEM part numbers: 54390, 64606, BC2744, 1003370
- Bausch & Lomb 31-31-52, 31-30-50
- Zeiss 902-058, 99-70-07
- Leitz/Leica 902-058
- Dolan/Jenner 02-015850-0000
Works With
- Standard GX5.3 (2-pin) lamp sockets
- 21V DC regulated power supplies and transformers
- Halogen-rated lamp modules and fixture assemblies
- Most medical and dental equipment designed for MR16 21V lamps
