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ID = 15452
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Triode, vacuum   Power/Output 
Identical to 4033A
Similar Tubes
Normally replaceable-slightly different:
Other class quality (otherwise equal):
Other base:

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Filament Vf 6 Volts / If 1.4 Ampere / Indirect
Description Power triode usable up to 2MHz and with reduced plate voltage up to 10MHz. 25W plate dissipation.
As class-A audio amplifier at 400V Va and -20V Vg delivers 4W undistorted on 7K load. 
Dimensions (WHD)
incl. pins / tip
55 x 118 x 55 mm / 2.17 x 4.65 x 2.17 inch
Weight 56 g / 1.98 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
4033A: Radiomuseum Luzern
Ernst Erb

4033A: Manufacturer's Literature
Emilio Ciardiello


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