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CTP1257

Information - Help 
ID = 36184
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Transistor   Power/Output 
Identical to CTP1257
Similar Tubes
Normally replaceable-slightly different:
  2N257
First Source (s)
Mar.1957 : -- Collector info (Sammler)

Base SPECIAL TUBEBASE in general
Filament Solid State
Description Material/Aufbau/Pol.: Germanium Legierung PNP;
Form/Case: TO-3;
Daten/electr.data: I F: 420 mA; U S: <1.5 V; Isp: <2 mA; ß (beta): >20; N: 42 W; Imax(Ic): 3 A; Umax(Uce): -40 V; f g(FT): 5 kHz; tmax j: 100 °C.
Manufactured by Clevite USA (Clevite Transistor Product = CTP); Typ ähnlich (bzw. identisch?) mit 2N257 (Daten s.o.) - 
Dimensions (WHD)
incl. pins / tip
27 x 10 x 40 mm / 1.06 x 0.39 x 1.57 inch
Weight 12 g / 0.42 oz
Information source -- Collector info (Sammler)   Joe Knight
 
ctp1257_redimensionner.jpg
CTP1257: ma propre collection
Jacky Parmentier

 
to3_41.gif
CTP1257: TVT 1969 Verlag Nolde Dachau
Günther Stabe † 19.8.20

 

Usage in Models 1= 1962

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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