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ID = 34057
Brand: Siemens; D (S.& Halske / S. Electrogeräte)
Tube type:  Transistor   Audio Frequency 
Identical to TF72
Similar Tubes
Normally replaceable-slightly different:
Different maximum ratings:
  AC176 ; TF70 ; TF71
First Source (s)
Apr.1954 : -- Collector info (Sammler)
Predecessor Tubes TF71  

Base Wires
Filament Solid State

NPN germanium junction transistor for AF pre-amplifier applications.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
8 x 7 x 4 mm / 0.31 x 0.28 x 0.16 inch
Weight 2 g / 0.07 oz
Information source -- Collector info (Sammler)   KTT 1969/70
TF72: Eigene Sammlung
Siegfried Neumann

TF72: TTT Steidle 1981
Günther Stabe † 19.8.20

TF72: Taschentabelle 4. Auflage Franzis-Verlag
Heinz Höger

Usage in Models 1= 1958??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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