Temperature independent fluorescent lighting

MASTER TL5 High Output TOP

MASTER TL5 High Output TOP

Product family information

This TL5 HO lamp (tube diameter 16 mm) offers a constant light level, independent of temperature fluctuations, making it an excellent solution for warm applications. The TL5 HO TOP can be operated on equivalent systems as MASTER TL5 HO. Excellent solution for warm applications, such as unconditioned warehouses, wall washers, etc.


Allows system miniaturization with maximum luminaire design freedom
Lamp lengths enable easy fitting into ceiling module systems
Retrofit to current TL5 HO non-amalgam lamps
Optimized for installations which need high luminous flux, especially in hot (above 40 °C) conditions
Constant lumen level over a wide temperature range (20-75 °C) with excellent lumen maintenance
Good colour rendering


Lumen output higher than 90% of maximum value at ambient lamp temperatures from 20 to 75 °C due to amalgam-controlled operation
Allows dimming-down to 30% light output
Hot restrike and good run-up behaviour compared to high intensity discharge lamps due to auxiliary amalgams at both lamp ends
Can be ignited at temperatures from -15 to +75 °C


Architectural lighting and customized solutions thanks to compact lamp size and high lumen package, especially in hot (above 40 °C) conditions
Economic solutions with high-ceiling lighting in retail and industrial application areas
Especially uplighting applications in offices where higher lumen packages are needed
Esthetic pendants, closed and furniture-mounted luminaires in offices, workshops, restaurants and reception areas
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