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OC75

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ID = 33808
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Transistor   Audio Frequency 
Identical to OC75 = OC305
Similar Tubes
Other shape (e.g. bulb type):
  2SB54
Normally replaceable-slightly different:
  2G374 ; 2SB175 ; 2SB65 ; 3AX71B ; AC122 ; AC125 ; AC151 ; AC161 ; AF7_BRC ; GC518 ; L-5021L ; MC75 ; OC1075 ; OC307 ; OC603 ; OC604 ; OC78D ; OX7005 ; SFT103 ; SFT105 ; ST301 ; T-1001 ; TS165
Other class quality (otherwise equal):
  OC71
Other base and data slightly different:
  3AX31B ; 3AX71C ; 965T1 ; GE-2 ; OC975
First Source (s)
Mar.1957 : Valvo-Berichte
Predecessor Tubes OC71   OC13  
Successor Tubes AC171   AC126   OC81D  
Base Wires
Description

PNP germanium alloy transistor intended as pre-amplifier in AF applications. All-glass body. Red 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 3 g / 0.11 oz
Information source -- Collector info (Sammler)   KTT 1969/70
oc75_umgeb1.gif
OC75: Braun T510: NF-Vorstufe u. Treiber
Günther Stabe † 19.8.20
allglas_trans_2.gif OC75: TVT 73
Günther Stabe † 19.8.20
d_valvo_oc75_1.png
OC75: Valvo_Dioden_Transistoren_1959
Thomas Günzel † 1.8.22
More ...
Usage in Models 2= 1957?? ; 1= 1958?? ; 1= 1958? ; 13= 1958 ; 3= 1959?? ; 3= 1959? ; 31= 1959 ; 28= 1960?? ; 26= 1960? ; 85= 1960 ; 8= 1961?? ; 27= 1961? ; 163= 1961 ; 19= 1962?? ; 51= 1962? ; 173= 1962 ; 16= 1963?? ; 34= 1963? ; 116= 1963 ; 15= 1964?? ; 20= 1964? ; 47= 1964 ; 40= 1965?? ; 15= 1965? ; 34= 1965 ; 2= 1966?? ; 17= 1966? ; 13= 1966 ; 2= 1967?? ; 9= 1967? ; 4= 1967 ; 4= 1968?? ; 3= 1968? ; 2= 1968 ; 1= 1969?? ; 3= 1969 ; 14= 1970?? ; 1= 1970? ; 4= 1971?? ; 2= 1971 ; 1= 1973?? ; 1= 1975?? ; 1= 1975? ; 1= 9999? ; 4= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1060

Collection of

Ulrich Engwicht (D)
Nikolaus Löwe (D)
Egon Penker (A)
Jacky Parmentier (F)
Museum Roggenhofer (A)
Daniel Consales (D)
Hermann Fleischanderl (A)
Karl-Heinz Entrich † 7.21 (D)
George Papaiz (CDN)
Peter Steffen (CH)
Günter Kudicke (D)
Karlheinz Fischer (D)
Glenn Moeller-Holst (DK)
Marcello Astolfi (I)
Alessio Fantinato (I)
 
oc75_1_1.jpg

OC75
 
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