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ID = 12865
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Double Diode-Tetrode 
Identical to Pen45DD

Base Octal-8 GB, (Mazda), K8B, MO (Codex=Vg)
Filament Vf 4 Volts / If 2 Ampere / Indirect / Specified voltage AC/DC
Description Double-diode, Beam Tetrode. Va & Vg2 <250V; gm =9mA/V. Pout 4.85W. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   

618.png Pen45DD: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
Pen45DD: Original data sheet
Michael Poll

More ...
Usage in Models 5= 1939?? ; 5= 1939 ; 1= 1942?? ; 2= 1945 ; 6= 1946 ; 1= 1947 ; 1= 1948 ; 2= 1949

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):23

Collection of



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