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Pen220_4pin

Information - Help 
ID = 72565
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Vacuum Pentode   Power/Output 
Identical to Pen220_4pin
Similar Tubes
Other base:
  Pen220

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Sidecontact.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Description

Anode and screen voltages = 150v. gm 2.2 mA/V RL optimum load is 14,000 Ohms Power output 0.6W

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1937
 
pen220_4pin.jpg
Pen220_4pin: Helmut Weigl
Helmut Weigl

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