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PenA1

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ID = 11478
       
Country:
Great Britain (UK)
Brand: Brimar (STC); Foots Cray
Tube type:  Vacuum Pentode   Power/Output 
Identical to PenA1
Similar Tubes
Normally replaceable-slightly different:
  4PenM ; PT4
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Direct / Specified voltage AC/DC
Description

Po=2.7W; Typ:- Va=250; Ia=32mA; Vs=250; Is=6.5mA; gm=3mA/V; Rload=8k.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 126 & 127
- - Manufacturers Literature   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

s_3_g_11.gif PenA1: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

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Just Qvigstad
pen.a1_brimar_radio_valves_1936_p1_data1.png
PenA1: Brimar Radio Valves 1936
Anonymous 1038 Collector

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Usage in Models 1= 1932 ; 2= 1933

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
 
pen.a1_brimar_radio_valves_1936_p1_picture.jpg

 

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