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BF254

Information - Help 
ID = 34995
       
Country:
Germany
Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Tube type:  Transistor   UHF 
Identical to BF254
Similar Tubes
Normally replaceable-slightly different:
  2A254 ; 2SC394 ; 2SC454 ; BF153 ; BF194 ; BF219 ; BF220 ; BF233 ; BF234 ; BF238 ; BF253 ; BF274 ; BF332 ; BF454 ; BF494 ; ED1501 ; S299T ; SF215 ; SF216 ; SF294
Different maximum ratings:
  BF240
Other base and data slightly different:
  2SC1853 ; BF184 ; BF214
First Source (s)
Mar.1968 : Telefunken-Zeitung
Predecessor Tubes BF184  
Successor Tubes BF454   BF494  
Base Wires
Description

NPN silicon planar-epitaxial high-frequency transistor.
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Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip		 5 x 5 x 4 mm / 0.20 x 0.20 x 0.16 inch
Weight 1 g / 0.04 oz
Information source -- Collector info (Sammler)   KTT 1969/70, TTT Steidle 1981
bf254_sch.png
BF254: Amateurfunk-Handbuch W.Diefenbach
Heinz Höger
transistor_21b_1.png BF254
Wolfgang Bauer
d_telefunken_bf254_dat1.png
BF254: Telefunken
Thomas Günzel † 1.8.22
More ...
Usage in Models 1= 1965?? ; 1= 1966 ; 2= 1968?? ; 1= 1968? ; 5= 1968 ; 8= 1969 ; 3= 1970?? ; 3= 1970? ; 24= 1970 ; 1= 1971?? ; 4= 1971? ; 23= 1971 ; 9= 1972? ; 24= 1972 ; 1= 1973?? ; 1= 1973? ; 32= 1973 ; 1= 1974? ; 13= 1974 ; 3= 1975?? ; 2= 1975? ; 18= 1975 ; 3= 1976?? ; 3= 1976? ; 12= 1976 ; 3= 1977?? ; 1= 1977? ; 5= 1977 ; 2= 1978? ; 6= 1978 ; 1= 1979?? ; 1= 1979? ; 2= 1979 ; 3= 1980?? ; 4= 1980? ; 2= 1981? ; 2= 1981 ; 2= 1982?? ; 1= 1982? ; 1= 1982 ; 1= 1983?? ; 2= 1983? ; 2= 1983 ; 1= 1984? ; 1= 1985?? ; 2= 1985 ; 1= 1986?? ; 1= 1986 ; 1= 1987
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):246
Literature "Telefunken Laborbuch V (Taschenbuch dunkelblau)"

Collection of

Museum Roggenhofer (A)
Marcello Astolfi (I)
Michael Mischke (D)
Karlheinz Fischer (D)
Oskar Elm (D)
Egon Strampe (D)
Peter Pfeiffer (D)
 
bf254.jpg

BF254
 
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