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BD439

Information - Help 
ID = 42434
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Transistor   Power/Output 
Identical to BD439
Similar Tubes
Normally replaceable-slightly different:
  2N4922 ; BD137 ; BD177 ; BD228 ; BD273 ; BD377 ; MJE181

Base Wires
Filament Solid State
Description NPN silicon planar transistor intended as AF power amplifier.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
8 x 12 x 3 mm / 0.31 x 0.47 x 0.12 inch
Weight 3 g / 0.11 oz
Literature - - -   
- - -   TTT Steidle 1981
- - -
- - -
 
bd439.jpg
BD439: Sammlung
Karlheinz Fischer

 
to126_t_36.gif
BD439: TTT Steidle 1981
Günther Stabe

 
d_telefunken_bd439_dat1.png
BD439: Telefunken Leistungstransistoren 1977/78
Thomas Günzel


Usage in Models 1= 1978?? ; 1= 1980?? ; 1= 1980

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3


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