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2N172

Information - Help 
ID = 37072
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Transistor   Frequency converter 
Identical to 2N172
First Source (s)
Mar.1956 : -- Collector info (Sammler)
Successor Tubes 2N252  

Base Wires
Filament Solid State
Description Material/Aufbau/Pol.: Germanium Flächen NPN;
Form/Case/Outline: TO-22;
Daten/electr.data: I F: 1 mA; U F: _ V; Isp: 3 µA; ß (beta): 20; N: 65 mW; Imax(Ic): 5 mA; Umax(Ucb/Uce): 16 V; f g(FT): >1 MHz; tmax j: 75 °C. 
Dimensions (WHD)
incl. pins / tip
11 x 11 x 5 mm / 0.43 x 0.43 x 0.20 inch
Weight 1 g / 0.04 oz
Literature -- Collector info (Sammler)   KTT 1969/70, TTT Steidle 1981
 
to_22_49.gif
2N172: TTT Steidle 1981
Günther Stabe

 

Usage in Models 4= 1955? ; 5= 1956? ; 8= 1956 ; 4= 1957? ; 2= 1957 ; 2= 1958 ; 1= 1959? ; 2= 1959

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):28

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