Fluorescent lamps with a 38 mm diameter L 25W (970 mm) or L 42W (1,047 mm) can be found in older lighting systems. What are the new types of the same length called?
With the introduction of the T 8 (26 mm) fluorescent lamps, major types of the T 12 (38 mm) lamps were replaced with
T 8 (26 mm), which also applies to the types with so-called special lengths. Here full replaceability is given, as the
length, electrical data and accessories are the same.
|O l d
|L 42W (1047 mm)
||L 38W (1,047 mm)
|L 25W ( 970 mm)
||L 23W ( 970 mm)
Electrical and luminous data of the 23W and 38W lamps are contained in the OSRAM Lighting program.