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3AX31D

Information - Help 
ID = 46389
       
Country:
People's Republic of China
Brand: Common type China (PRC) tube/semicond.
Tube type:  Transistor   Audio Frequency 
Identical to 3AX31D
Similar Tubes
Normally replaceable-slightly different:
  2N220 ; 2SB14 ; 2SB47 ; 2SB75 ; 3AX13 ; 3AX31 ; 3AX31C ; 3AX31E ; AC125 ; OC303
Other base and data slightly different:
  OC71
First Source (s)
Nov.1967 : -- Schematic
Successor Tubes 3AX71B  

Base Wires
Filament Solid State
Description Material/Aufbau/Pol.: Germanium Legierung PNP;
Form/Case: TO-1;
Daten/electr.data: I F: _ mA; U F: __ V; Isp: <12 µA; ß (beta): 30-150; N: 100 mW; Imax(Ic): 30 mA; Umax(Uce): -12 V; f g(FT): >8 kHz; tmax j: __ °C.
Dimensions (WHD)
incl. pins / tip
6 x 10 x mm / 0.24 x 0.39 x inch
Weight 1 g / 0.04 oz
Information source -- Schematic   
 
to1_ttt_224.gif
3AX31D: TTT Steidle 1981
Günther Stabe † 19.8.20

 

Usage in Models 1= 1965 ; 14= 1966?? ; 5= 1967?? ; 1= 1967 ; 11= 1968?? ; 13= 1972?? ; 10= 1974?? ; 1= 1974 ; 2= 1975??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):58

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