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ST28A

Information - Help 
ID = 39249
       
Country:
Japan
Brand: NEC Corporation, Nippon Electric Co. Ltd. (Nippon Denki); Tokyo
Tube type:  Transistor   RF/IF-Stage 
Identical to ST28A
Similar Tubes
Normally replaceable-slightly different:
  OC45
Successor Tubes 2S154  

Base Wires
Filament Solid State
Description Material/Aufbau/Pol.: Germanium _____ PNP;
Form/Case: TO-22;
Daten/electr.data: I F: __ mA; U F: __ V; Isp: __ µA; ß (beta): __; N: __ mW; Imax(Ic): __ mA; Umax(Uce): -__ V; f g(FT): __ MHz; tmax: __ °C.
(no data available yet) AM-ZF-Verstärkung; Nachfolger: 2S154 => 2SA154. - 
Dimensions (WHD)
incl. pins / tip
9 x 8 x 5 mm / 0.35 x 0.31 x 0.20 inch
Weight 1 g / 0.04 oz
Literature -- Schematic   
 
to22_ktt_11.gif
ST28A: TTT Steidle 1981
Günther Stabe

 

Usage in Models 2= 1959? ; 1= 1962?? ; 1= 1965?? ; 1= 9999?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5

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