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OC77

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ID = 33919
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Transistor   Universal 
Identical to OC77 = 2N284A
Similar Tubes
Normally replaceable-slightly different:
  2SB177 ; NKT217 ; OC1077 ; OC77P ; WN5442
Different maximum ratings:
  2S150
First Source (s)
Mar.1958 : Valvo-Berichte
Base Wires
Description PNP germanium junction transistor intended as pre-amplifier / switch in AF applications. 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 2 g / 0.07 oz
Information source -- Collector info (Sammler)   KTT 1969/70
oc77.png
OC77: H. Schreiber Radio-TV Transitors
Hugo Sneyers
r9_51.gif OC77: TTT Steidle 1981
Günther Stabe † 19.8.20
More ...
 d_valvo_oc77_1.png
OC77: Valvo_Dioden_Transistoren_1959
Thomas Günzel † 1.8.22
More ...
Usage in Models 1= 1958?? ; 2= 1960? ; 1= 1960 ; 1= 1961?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of

Wilfried Hofmüller (A)
Hans Smit (NL)
Patrice Zeissloff (F)
Marcello Astolfi (I)
Peter Pfeiffer (D)
Siegfried Neumann (D)
Nikolaus Löwe (D)
 
oc77.jpg

OC77
 
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