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OC72

Information - Help 
ID = 33685
       
Country:  Europe      Brand: Common type Europe tube/semicond.
  Tube type:  Transistor   Power/Output 
Identical to OC72 = 2OC72 = 2N282 = 2N281 = WN5432
Similar Tubes Other shape (e.g. bulb type):
 2N320; 2SB56; 988T1
Normally replaceable-slightly different:
 2G108; 2G109; 2G270; 2G271; 2N188; 2N241A; 2S113; 2S114; 2S115; 2S14; 2SB156; 2SB79; 3AX71B; AC128; AC152; GC509; GTE2; L-5028; OC1072; OC307; OC308; OC602spez; OC604spez; OC74; OC76; OC78; OC78D; SFT121; SFT122; SFT123; SFT322; SFT353; ST122; T-1008; V10/15A
Different maximum ratings:
 AC124; AC131; AC153; AC188; AC193; GFT22; TF66; V10/30A
Other base and data slightly different:
 987T1
First Source (s) Oct.1954 : Valvo-Berichte
Predecessor Tubes OC12   OC14  
Successor Tubes OC74  

Base Wires
Filament Solid State /
Description

PNP germanium transistor intended as low power amplifier / switch in AF applications. All-glass body with heat sink. 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 4 g / 0.14 oz
Literature -- Collector info (Sammler)   KTT 1969/70

  oc72_umg.gif
  OC72: Grundig Micro Transistor 59
Günther Stabe
d_valvo_oc72.jpg
OC72: Eigene Sammlung
Thomas Günzel

 
Variants
 
r9_3.gif
OC72: TTT Steidle 1981
Günther Stabe

 
d_valvo_oc72_1.png
OC72: Valvo_Dioden_Transistoren_1959
Thomas Günzel


Usage in Models 1= 1955? ; 1= 1955 ; 1= 1956?? ; 4= 1956? ; 21= 1956 ; 3= 1957?? ; 6= 1957? ; 48= 1957 ; 4= 1958?? ; 17= 1958? ; 65= 1958 ; 3= 1959?? ; 18= 1959? ; 80= 1959 ; 36= 1960?? ; 31= 1960? ; 86= 1960 ; 3= 1961?? ; 7= 1961? ; 58= 1961 ; 9= 1962?? ; 11= 1962? ; 43= 1962 ; 5= 1963?? ; 6= 1963? ; 21= 1963 ; 2= 1964?? ; 4= 1964? ; 9= 1964 ; 9= 1965?? ; 3= 1965? ; 8= 1965 ; 2= 1966 ; 1= 1968?? ; 1= 1970? ; 1= 1970 ; 1= 1973? ; 1= 1975?? ; 3= 9999
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):633

OC72*Box

aus eigener Sammlung
Karl-Heinz Entrich
   

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