Antique radios, Old Time Radios

OC72

Country:	Europe		Brand:	Common type Europe
			Tube type:	Transistor Power/Output

Tube ID = 33685


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Identical to	OC72 = 2OC72
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; 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
First Source (s)	Oct.1954 : Valvo-Berichte
Predecessor Tubes	OC12 OC14
Successor Tubes	OC74

Base	Wires
Was used by	Radio/TV-reception etc.
Filament
Description	PNP germanium transistor intended as small 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)	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


	Grundig Micro Transistor 59 Günther Stabe

Sammlung
Wolfgang Bauer

TTT Steidle 1981
Günther Stabe

Valvo_Dioden_Transistoren_1959
Thomas Günzel

Usage in Models (calculation each 25th of the month)	1= 1955? ; 1= 1955 ; 2= 1956? ; 9= 1956 ; 1= 1957?? ; 2= 1957? ; 24= 1957 ; 2= 1958?? ; 16= 1958? ; 25= 1958 ; 2= 1959?? ; 12= 1959? ; 24= 1959 ; 14= 1960?? ; 7= 1960? ; 28= 1960 ; 2= 1961?? ; 21= 1961 ; 4= 1962?? ; 3= 1962? ; 16= 1962 ; 2= 1963?? ; 1= 1963? ; 6= 1963 ; 1= 1964?? ; 2= 1964? ; 4= 1964 ; 1= 1965?? ; 1= 1965 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 234

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OC72

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