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BF421

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ID = 39727
       
Country:
Worldwide
Brand: Common type Worldwide tube/semicond.
Tube type:  Transistor   Power/Output 
Identical to BF421
Similar Tubes
Normally replaceable-slightly different:
  BF423

Base Wires
Description PNP silicon planar transistor intended as video amplifier.

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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

bf871bf421_1.png
BF421: Schema: CUC 5301
Egon Strampe

sot54_ttt_12.gif BF421: TTT Steidle 1981
Günther Stabe † 19.8.20

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bf4210001.png
BF421: Siemens Transistoren 1980/81
Oskar Elm

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Usage in Models 1= 1968 ; 1= 1986

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of

 
bf421.jpg

BF421
 

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