Antique radios, Old Time Radios
CTP1257
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Country:
United States of America (USA)
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| Identical to |
CTP1257
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| Similar
Tubes |
Normally replaceable-slightly different:
2N257
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| First Source
(s) |
Mar.1957 : -- Collector info (Sammler)
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| Base |
SPECIAL TUBEBASE in general
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| 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.) -
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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
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CTP1257: TVT 1969 Verlag Nolde Dachau
Günther Stabe † 19.8.20
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
Collection of
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