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Ushio EKE/L 150W MR16 Halogen Light Bulb

Ushio EKE/L 150W MR16 Halogen Light Bulb

$24.95
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SKU:
EKE/L (1003370)
Availability:
Stock Item
Shipping:
Calculated at Checkout
Quantity Option (Each):
1 Bulb
Product Description
Long-life MR16 halogen reflector lamp (ANSI EKE/L) for precision optical illumination, microscopes, and fiber-optic light sources.
 
Overview

The Ushio EKE/L is a 150W, 21V tungsten-halogen lamp in the MR16 reflector format, engineered for equipment that depends on consistent beam geometry and repeatable lamp seating. This is the long-life EKE variant (commonly listed as JCR21V-150W), using a GX5.3 bi-pin base and a clear MR16 reflector envelope. Ushio Item Code: 1003370.

Key Highlights
  • Electrical: 150W, 21V
  • ANSI / ID: EKE/L
  • Shape: MR16 Reflector
  • Base: GX5.3 bi-pin
  • Color Temperature: 3200K
  • Average Life: 1000 hours (nominal, long-life)
  • Bulb Finish: Clear
  • Burn Position: BD/HZ (base down / horizontal)
Typical Applications
  • Microscope illumination and laboratory optics
  • Fiber-optic light sources and medical / inspection illumination heads
  • Projection and specialty optical systems specifying ANSI EKE/L (JCR21V-150W)
Selection Tip (Long-Life vs Standard EKE)
EKE and EKE/L are often interchangeable mechanically, but they are not identical “in use.” EKE/L prioritizes longer life for reduced change-outs, while standard EKE versions may run a slightly different photometric balance depending on catalog spec. For best results, qualify by EKE/L, then confirm 21V, 150W, and GX5.3.
Handling Tip
Halogen lamps operate at high temperature and are sensitive to contamination. Avoid touching the glass/reflector with bare hands. Use clean nitrile gloves and/or a lint-free wipe. Ensure the socket is clean and provides firm pin contact to reduce heat-related failures.
Industry Update (Branding & Supply Continuity)
Ushio has an agreement to acquire ams OSRAM’s Entertainment & Industry Lamps (ENI) business, with closing expected by the end of March 2026. During transitions like this, customers may see changes to branding, labeling, or packaging—even when the underlying lamp specification remains consistent. SOSCleanroom will continue to support specialty lamps and can help qualify continuity by part number and critical specs.
Need help selecting the right product?
Always confirm ANSI ID (EKE/L), voltage (21V), wattage (150W), base type (GX5.3), and required burning position (BD/HZ) prior to installation.
The Technical Vault
By SOSCleanroom
ANSI EKE/L
Ushio EKE/L — JCR21V-150W — 150W 21V — MR16 Reflector — GX5.3 Bi-Pin
Primary identifier: Ushio 1003370 | Product series: MR16 JCR | “Long-life EKE” variant.
Core Qualification Specifications (Manufacturer Listing)
Ushio item code1003370
ID / ANSI codeEKE/L
Lamp descriptionJCR21V-150W (MR16 halogen reflector)
Wattage / Voltage150W / 21V
BaseGX5.3 (bi-pin)
Bulb shape / finishMR16 / Clear
Color temperature3200 K
Average life1000 hours (nominal)
Burning positionBD/HZ (base down / horizontal)
Filament (catalog-listed)CC-6
Lamp Science (MR16 Reflector + Alignment + Halogen Cycle)

EKE/L is a tungsten-halogen source: a tungsten filament runs at high temperature inside a halogen environment. In properly designed luminaires, the halogen regenerative cycle helps reduce envelope darkening and supports steadier output over life compared with non-halogen incandescent lamps.

The MR16 reflector is part of the optical system. Reflector geometry and controlled filament placement drive beam formation and coupling into condenser optics, light guides, and fiber bundles. This is why “same wattage” lamps can produce noticeably different results when reflector/filament geometry differs.

Compare & Contrast (EKE vs EKE/L)
EKE/L is commonly the long-life option (reduced change-outs, steadier maintenance intervals). Standard EKE versions are often cataloged around shorter life. If your system is sensitive to color balance, beam focus, or heat load, qualify by ANSI ID first (EKE/L), then confirm base (GX5.3), voltage (21V), and fixture burn position requirements.
Cross-Reference (Common Market Equivalents)
Common ways this lamp appears in catalogs include Ushio 1003370 (EKE/L) and “JCR21V-150W” long-life listings. Cross references are frequently shown against other brand EKE/EKE long-life part numbers—always validate by 21V, 150W, GX5.3, and your fixture’s optical requirements.
Installation Notes (Field Reliability)
Premature failures are most often linked to contamination (finger oils), worn sockets, and over-voltage. Verify transformer output under load (21V systems can drift), and replace worn GX5.3 sockets to maintain proper contact pressure and reduce resistive heating at the pins.
Industry Update (Ushio + ams OSRAM ENI)
Ushio has an agreement to acquire ams OSRAM’s Entertainment & Industry Lamps (ENI) business, with closing expected by the end of March 2026. Customers may see branding or packaging changes during the transition while specifications remain consistent. SOSCleanroom will continue supporting specialty lamps and qualifying continuity by part number and critical specifications.