Ushio M21E001 Solarc MR11 – Metal Halide Arc Lamp (21 W, 60 V, 5850 K) with Dichroic Elliptical Reflector
The Ushio Solarc M21E001 is a metal halide arc lamp with an MR11 elliptical dichroic reflector, designed to deliver high-efficiency , daylight-quality white light in a very compact size. With a power output of 21 W at 60 V and a color temperature of 5850 K , it provides a nominal 1500 lm and an average lifespan of 750 h , tripling the efficiency of comparable halogen solutions. Its robust construction and short arc geometry allow for optimal integration with light guides and imaging systems in medical and industrial endoscopy , fiber optic illuminators , technical flashlights , and portable equipment.
The Solarc design requires a compatible electronic ballast for ignition (high-voltage pulses) and regulation; it reaches 90% output in approximately 20 seconds and restarts in approximately 30 seconds. The lamp is designed to operate horizontally and indicates its orientation with the marking " Burn this side up ." It connects via a GY15 base and can use the C18A003 connector assembly, depending on the manufacturer's configuration.
Main features
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Technology: Metal halide arc (short arc) lamps with MR11 elliptical reflector and dichroic coating.
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Power and supply: 21 W at 60 V; typical current 0.35 A (electronic ballast required).
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Light and color: 1500 lm nominal; 5850 K (daylight); fast start-up (≈20 s to 90%).
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Lifespan: 750 h (typical usage cycle). Stable color and flow maintenance throughout its lifespan.
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Base and connection: GY15 ; compatible with C18A003 connector for Solarc ballasts.
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Optics and dimensions: MR11 diameter ≈ 34.9 mm ; F2 focal plane at ~14.7 mm from the edge of the reflector.
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Recommended orientation: horizontal (marked “Burn this side up”). Requires adequate cooling of the unit.
Product benefits
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High efficiency : up to three times more effective than comparable halogen, with lower consumption or greater light output at the same power.
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Image quality : white “day” light (≈5850 K) and short arc for high luminance and efficient coupling to optical fiber.
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Compact format : MR11 elliptical reflector that facilitates integration into portable equipment and light heads.
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Quick and repeatable start-up : quick start-up and restart with compatible ballast, ideal for frequent cycles.
Common applications
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Medical and industrial endoscopy and fiber optic illuminators .
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Microscopy and visual inspection in R&D and quality control.
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Portable technical lighting : spotlights, industrial and diving flashlights (depending on equipment).
Frequently Asked Questions
Does it need a specific ballast? Yes. Solarc lamps require a Ushio electronic ballast or another compatible one that provides the high-voltage ignition pulses and the rated current (~0.35 A at 60 V).
How should I mount it? In a horizontal position , respecting the "Burn this side up" mark, with adequate ventilation/cooling and without touching the reflector . Use the wiring/connector recommended by the equipment manufacturer.
Is there a mounting ring or accessory? Yes, the M21E00S-001 (Lamp Ring 21 W) is the ring associated with the 21 W family (check compatibility with your equipment).
Project description
Ushio Solarc M21E001 metal halide arc lamp: MR11 elliptical reflector; 21 W , 60 V , 0.35 A ; 1500 lm ; 5850 K ; 750 h life ; GY15 base; F2 focal plane ~ 14.7 mm from the edge; reflector diameter ≈ 34.9 mm ; fast ignition by electronic ballast ; operation characterized in horizontal position (“Burn this side up”); compatible with C18A003 connector .
