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ID = 33731
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Transistor   Universal 
Identical to OC140
Similar Tubes
Normally replaceable-slightly different:
  2SC35 ; 2SC50 ; 321T3 ; AC190 ; OC127 ; OC79C ; TF71
Other base and data slightly different:
First Source (s)
Mar.1959 : Valvo-Berichte
Successor Tubes AC130  

Base Wires
Was used by Technology / Measurement
Filament Solid State

NPN junction germanium transistor intended as switch and / or bi-directional applications. All-glass body, blue (?) dot indicates collector.
Also made by Philips and related manufacturing plants.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
5 x 15 x mm / 0.20 x 0.59 x inch
Weight 2 g / 0.07 oz
Literature -- Collector info (Sammler)   KTT 1969/70
  OC140: Philips L0X10T
Günther Stabe
OC140: G.S.
Günther Stabe

OC140: TVT 73
Günther Stabe

OC140: Miniwatt Halbleiterdaten 1960, Wiveg
Markus Müllner

Usage in Models 1= 1958 ; 1= 1961 ; 1= 1962? ; 3= 1962 ; 1= 1963 ; 1= 1966? ; 1= 1970? ; 1= 9999

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):10

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