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OC28

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ID = 33990
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Transistor   Power/Output 
Identical to OC28
Similar Tubes
Normally replaceable-slightly different:
  GET9
Different maximum ratings:
  ASZ15 ; GET571 ; GET7 ; GET8
First Source (s)
Mar.1960 : Valvo-Berichte
Predecessor Tubes OC16  
Successor Tubes ASZ15  
Base SPECIAL TUBEBASE in general
Description PNP germanium alloy transistor intended as power amplifier / switch in AF applications.
Also made by Mullard and Philips related manufacturing plants. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip		 26 x 40 x 10 mm / 1.02 x 1.57 x 0.39 inch
Weight 10 g / 0.35 oz
Information source -- Collector info (Sammler)   KTT 1969/70
oc28.png
OC28: Empfänger ED80 (Rohde&Schwarz)
Heinz Höger
to3_1.gif OC28: TTT Steidle 1981
Günther Stabe † 19.8.20
oc28.png
OC28: Valvo Taschenbuch 67
Heinz Höger
Usage in Models 1= 1961? ; 1= 1961 ; 2= 1962 ; 1= 1963? ; 2= 1963 ; 2= 1964?? ; 1= 1964? ; 1= 1964 ; 1= 1965?? ; 2= 1965 ; 2= 1966 ; 1= 1969
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):17

Collection of

Christian ADAM (F)
Siegfried Neumann (D)
Horst Willers (D)
Karl-Heinz Entrich † 7.21 (D)
 
nl_mullard_oc28.jpg

OC28
 
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