Harvard DKE08 – Limited Stock

DKE08 Technical Data

Lamps 8W T5
AC voltage range 220-240V
Mains frequency range AC/DC, 50-60Hz
Power factor >0.95
Max. case temperature Tc 75°C
Ambient temperature range -10°C to 50°C
Weight 190g
Safety standard compliance BS EN 61347

Other Harvard compact ballasts stocked.

DKE18L

8W T5 lamps are 12-inch (288mm–300mm length, 16mm diameter) miniature fluorescent tubes with G5 2-pin bases, typically producing ~380-450 lumens. Common in cabinets, furniture, and emergency lighting, they offer a 5,000–15,000 hour lifespan and are often 3500K–6500K. Note: Standard fluorescent T5s are being phased out as of 2023.

Key Features and Specifications

Dimensions: Approximately 288mm (excl. pins) to 300mm (incl. pins) in length, with a 16mm diameter.

Cap/Base: G5 2-pin base (pins are 5mm apart).

Wattage: 8 Watts.

Light Output: Approximately 380–450 lumens.

Colour Temperature: Commonly 3500K (White), 4000K (Cool White), or 6500K (Daylight).

Lifespan: Generally between 5,000 and 15,000 hours.

Common Applications

Under-cabinet Lighting: Popular in kitchen cabinets and shelving.

Display Cases: Used in retail settings.

Emergency Lighting: Found in exit signs and emergency fixtures.

Furniture Fixtures: Used for accent or task lighting in furniture.Alternatives and Considerations

Phasing Out: Traditional fluorescent T5 tubes are being removed from the market, with restrictions starting in August 2023.

LED Replacements: Plug-and-play LED alternatives are available, which offer instant start, no flickering, and higher energy efficiency (e.g., 566 lumens).

Compatibility: T5 tubes cannot be used in T8 fittings.

Common Manufacturers/Brands

• Crompton
• TBE Lighting
• Luxram
• Fusion

8W T5 ballasts are compact electronic devices, such as the Harvard DKE08, used to power 300mm (12-inch) fluorescent tubes, often in under-cabinet or display lighting. They offer stable, flicker-free light, improved energy efficiency, and extended tube life. These 220-240V ballasts are commonly found in both conventional and high-

Key Aspects of 8W T5 Ballasts:

Common Models: Harvard DKE08 (compact/matchbox style).

Applications: Ideal for tight spaces, including cabinet lighting, signage, display cases, and emergency lighting.

Operation: They deliver high-frequency, flicker-free operation, ensuring a lifespan up to 15,000–50,000 hours depending on the unit.

Installation: Involves standard 2-pin G5 sockets.

Alternatives: Modern LED tubes exist that can replace these, often bypassing the ballast entirely.

Harvard Technology was a UK-based company specializing in smart lighting solutions, including LED drivers, light engines, and wireless control systems like the LeafNut and EyeNut systems. The company’s original business faced administration, but its assets were acquired and its products, particularly LED drivers and sources, are now sold under the new entity, Harvard Power Systems, which is part of the Gallant Lighting Group. The original company was known for pioneering early wireless smart lighting technology for both indoor and outdoor applications.

Key details regarding Harvard Technology and its successors:

Core Products: Specialized in LED drivers (CoolLED range), LED light engines (LEDeng), and wireless lighting controls for interior and exterior use.

Innovations: Early leader in wireless street lighting control (LeafNut) and indoor IoT monitoring systems (EyeNut).

Manufacturing: Maintained strong R&D and manufacturing roots in the UK, particularly in Leeds.

Corporate Changes: Following financial challenges and administration in late 2018, parts of the business were acquired.

Successor/Related Entity: Harvard Power Systems UK, part of the Gallant Lighting Group, emerged to focus on high-spec LED drivers and lighting components, utilizing UK engineering.