Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 46493
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Power/Output 
Identical to DFA6

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.85 Ampere / Direct / Battery =

"A Power amplifier with a very large emission, suitable for operating with anode voltages up to 400 volts. It can also be used as a low power transmitter dissipating 10 watts continuously with perfect safety." Mullard.

Va < 400; Ra 4500 ohms, 1.45mA/V at Va=100 and Vg=0


Filament current of 0.85A is a maximum figure. DFA series = Dull Filament Amplifying

Information source - - Manufacturers Literature   Advertisement May 1930

b4_base_pins~~93.png DFA6: Fin Stewart
Fin Stewart

Just Qvigstad


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

Data Compliance More Information