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BF521

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ID = 58714
       
Country:
Poland
Brand: Unitra CEMI, Naukowo-Produkcyjne Centrum Półprzewodników; Warschau
Tube type:  Transistor   RF/IF-Stage 
Identical to BF521
Similar Tubes
Other shape (e.g. bulb type):
  BF621

Base Wires
Description

NPN silicon planar high-frequency transistor

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
6 x 6 x 6 mm / 0.24 x 0.24 x 0.24 inch
Weight 1 g / 0.04 oz
Information source - - Manufacturers Literature   Unitra Cemi

pl_unitra_bf521_anwdg.png
BF521: Ausschnitt aus Schltg MLR-3
Karl-Heinz Entrich † 7.21

to_18~~51.gif BF521: TVT 73
Günther Stabe † 19.8.20

Usage in Models 1= 1970?? ; 1= 1978

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

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