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Ushio DYS/DYV/BHC 600W Halogen Light Bulb

Ushio DYS/DYV/BHC 600W Halogen Light Bulb

$15.75
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SKU:
DYS/DYV/BHC (1000251)
Availability:
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Quantity Option (Each):
1 Bulb
Product Description
High-output tungsten-halogen lamp (ANSI DYS / DYV / BHC) for photographic fixtures, stage & studio lighting, and specialty optical illumination.
 
Overview

The Ushio DYS / DYV / BHC is a professional 600W, 120V tungsten-halogen lamp commonly specified by ANSI codes DYS, DYV, and BHC. It uses a GY9.5 2-pin prefocus base to ensure repeatable lamp seating in fixtures where filament placement affects beam focus and coupling. This lamp is widely used in photographic lighting heads and other high-intensity continuous illumination systems. Common Ushio reference: 1000251 (also listed as JCD120V-600WC).

Key Highlights
  • Electrical: 600W, 120V (AC)
  • ANSI Codes: DYS / DYV / BHC
  • Base: GY9.5 (2-pin prefocus)
  • Nominal Output: 17,000 lumens
  • Color Temperature: 3200K
  • Average Life: 75 hours (nominal)
  • Envelope / Shape: Clear, G7 globe
Typical Applications
  • Professional photographic lighting heads (continuous)
  • Stage & studio fixtures specifying DYS / DYV / BHC
  • Specialty illumination assemblies where prefocus alignment is required
Selection Tip (Prevent Mis-Matches)
In high-intensity fixtures, “600W halogen” is not specific enough. For correct replacement, qualify by ANSI DYS / DYV / BHC, then confirm 120V and base GY9.5 prefocus. Prefocus lamps are designed to control filament placement for optical performance.
Handling Tip
Halogen lamps operate at high temperature and are sensitive to contamination. Avoid touching the quartz/glass with bare hands. Use clean nitrile gloves and/or a lint-free wipe. Allow full cool-down before removal, and operate only in luminaires designed for high-wattage halogen sources.
Industry Update (Ushio & 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 underlying specifications remain 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 code (DYS / DYV / BHC), voltage (120V), wattage (600W), and base type (GY9.5 prefocus) prior to installation.
The Technical Vault
By SOSCleanroom
ANSI DYS / DYV / BHC
Ushio DYS / DYV / BHC — 600W 120V — GY9.5 Prefocus — Clear G7 Globe
Common identifiers: Ushio 1000251 | JCD120V-600WC | ANSI DYS / DYV / BHC.
Core Qualification Specifications (Catalog Data)
Electrical600W / 120V (AC)
ANSI codesDYS / DYV / BHC
BaseGY9.5 (2-pin prefocus)
Nominal output17,000 lm
Color temperature3200 K
CRIRa 100 (typical for tungsten-halogen)
Rated life75 hr (nominal)
EnvelopeClear G7 globe
FilamentCC-6 (catalog-listed)
Dimensions (typ.)Ø ~0.875 in | MOL ~2.50 in | LCL ~1.44 in
Lamp Science (Prefocus Optics + Halogen Cycle)

DYS/DYV/BHC is a tungsten-halogen source: a tungsten filament runs at high temperature inside a quartz/glass envelope containing halogen chemistry. In properly designed luminaires, the halogen regenerative cycle helps reduce envelope blackening and supports more consistent output over the rated life.

The GY9.5 prefocus base is the real “performance feature” in many fixtures: it controls how the lamp seats so the filament aligns with reflectors and lenses. That alignment affects beam focus, uniformity, and coupling efficiency in photographic heads and optical assemblies.

Compare & Contrast (DYS vs “Any 600W GY9.5”)
Lamps can share a GY9.5 interface but differ in filament geometry, LCL, and thermal behavior—changing beam and focus. For continuity, qualify by ANSI DYS / DYV / BHC, then validate LCL when your fixture is sensitive to focus or reflector alignment.
Cross-Reference (Common Market Naming)
Common ways this lamp appears in catalogs include DYS, DYV, BHC, 1000251, and JCD120V-600WC. If you share the fixture model (or existing lamp markings), SOSCleanroom can help confirm exact equivalency for your optical system.
Safety & Fixture Requirements
Operate only in luminaires designed for high-wattage halogen lamps with appropriate shielding and thermal management. Maintain clear ventilation paths and correct socket contact pressure to prevent resistive heating at the pins.
Industry Update (Ushio + ams OSRAM ENI)
Ushio has signed an agreement to acquire ams OSRAM’s Entertainment & Industry Lamps (ENI) business; the transaction is expected to close by the end of March 2026. Customers may see branding or packaging changes during the transition while specifications remain consistent.