Osram 54574 FAD 650W 120V R7s Double-Ended Halogen Lamp 3200K

Osram 54574 FAD — 650W 120V Double-Ended Tungsten Halogen Lamp, R7s Base, T4 Bulb, 16,500 Lumens, 3200K, CRI 100

The Osram FAD (product number 54574) is a 650W double-ended tungsten halogen lamp for stage and studio use. It operates at 120V AC and produces 16,500 lumens at a 3200K studio-standard color temperature with a color rendering index of 100. The lamp uses an R7s recessed single contact base at each end, a clear T4 quartz bulb, and a CC-8 coiled-coil filament, with a maximum overall length of 3.097 in (79.4mm). Average rated life is 100 hours and the lamp may be operated in any position. Because it is a double-ended quartz halogen lamp, it must be run in a suitable enclosed luminaire with a protective shield or grid. Confirm the ANSI code, base, and lamp length against the fixture before ordering.

Technical Specifications

Product Overview

The FAD is a double-ended tungsten halogen lamp built for professional stage and studio fixtures. It carries an R7s recessed single contact at each end and a clear T4 quartz bulb with a CC-8 coiled-coil filament, packing 650 watts into a lamp just 3.097 in long. That combination of high wattage in a very short envelope is what makes double-ended halogen the standard source for compact floodlights, cyc lights, striplights, and border lights, where the linear filament matches a trough or asymmetric reflector far better than a single-ended lamp would.

Color quality is the reason this lamp remains specified for camera work. It produces 3200K, the tungsten standard that studio cameras and film stocks are balanced against, at a color rendering index of 100 — the reference point of the CRI scale, which a continuous-spectrum incandescent source achieves by definition. There are no spectral gaps of the kind discharge and LED sources introduce, so skin tones, fabrics, and set finishes reproduce accurately without correction.

As a tungsten filament source it reaches full output instantly with no warm-up or restrike delay, and it dims smoothly on standard theatrical dimmers, warming in color as it dims in the way stage and studio operators expect. Output is 16,500 lumens, roughly 25 lumens per watt, and the lamp may be operated in any position.

Average rated life is 100 hours. That is short even by professional tungsten standards and is the tradeoff for the high output and color quality — the filament runs hot to hold 3200K at full output. Any venue running these regularly should carry spares as a matter of course; the lamp is supplied 12 per case.

Compatible Applications

• Stage and theatre fixtures — cyc lights, striplights, border lights, and compact floods
• Studio, TV, and film production lighting requiring 3200K tungsten balance
• Broadcast studio floodlights and soft lights
• Professional photography — continuous lighting where accurate color rendering is required
• Asymmetric and trough reflector fixtures suited to a linear filament
• Theatrical fixtures operated on standard dimming systems
• Replacement lamp for fixtures specified with ANSI code FAD

Before Ordering — Verify

• Confirm the fixture specifies ANSI code FAD. ANSI codes identify a specific combination of wattage, voltage, base, filament, and dimensions, and lamps sharing the R7s base are not interchangeable across different ANSI codes.
• Confirm the base is R7s double-ended and that the fixture accepts a 3.097 in (79.4 mm) lamp. R7s halogen lamps are made in several standard lengths and the contacts must bridge the fixture's socket spacing exactly.
• Confirm this is a stage or studio fixture. This is a 100-hour, 3200K, CRI 100 professional lamp. It shares the R7s base and roughly the length of general-purpose double-ended halogen work and flood lamps, but those are different products with different color temperature and much longer rated life. The two are not substitutes for one another.
• Confirm supply voltage is 120V. Operating a 120V halogen lamp above its rated voltage shortens life sharply.
• Confirm the luminaire is an enclosed type fitted with a protective shield or grid. This lamp must not be operated in an open fixture.
• If the fixture is dimmed, note that this lamp shifts warmer in color as it dims. Where constant color temperature is required across dimming levels, a tungsten source is not the right choice.
• Note the 100-hour average rated life when planning spares and maintenance intervals.
• Confirm case quantity — this item is supplied 12 per case.

Safety and Handling Guidelines

• Halogen lamps may only be operated in suitable luminaires designed with protective mechanisms such as shields or grids, so that no parts or shards can escape if the lamp bursts and no ultraviolet radiation can escape during operation.
• The luminaire should carry a warning sign indicating that the lamp gives off high levels of heat.
• Disconnect power and allow the lamp to cool completely before handling or replacement. A 650W quartz halogen lamp runs extremely hot and stays hot well after switch-off.
• Do not touch the quartz envelope with bare hands. Skin oils cause localized overheating of the quartz and lead to premature failure or bursting. If the envelope is touched, clean it with isopropyl alcohol before operating.
• Handle the lamp by its ceramic end caps, not the quartz tube.
• Seat both ends fully in their contacts. A partially seated double-ended lamp arcs at the contact and can overheat the socket.
• Do not exceed the rated 120V supply voltage.
• Ensure the fixture provides adequate ventilation and that the lamp is not operated against combustible materials.
• Do not operate a lamp with a scratched, cracked, or otherwise damaged envelope.
• Follow the fixture manufacturer's instructions for lamp orientation and any position restrictions the fixture imposes, even though the lamp itself is rated for any operating position.

Compliance

• Contains no mercury. Not subject to mercury lamp disposal or shipping restrictions.
• Emits ultraviolet radiation during operation. Must be operated behind appropriate shielding in an enclosed luminaire.
• Dispose of in accordance with local regulations.

Ordering Information

• Brand: Osram
• Product Number: 54574
• Order Abbreviation: FAD
• Abbreviation with Packaging: FAD 120V 12/CS 1/SKU
• ANSI Code: FAD
• LIF Code: P2/6
• Case Quantity: 12 per case
• Lamp: 650W, 120V AC double-ended tungsten halogen, R7s base, clear T4 bulb, CC-8 filament
• Optical: 16,500 lm, 3200K, CRI 100
• Maximum Overall Length: 3.097 in (79.4 mm)
• Average Rated Life: 100 hours

For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.