Antique radios, Old Time Radios

OC72

Country:	Europe		Brand:	Common type Europe tube/semicond.
			Tube type:	Transistor Power/Output

Tube ID = 33685

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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: Grundig Micro Transistor 59 Günther Stabe

OC72: Eigene Sammlung
Thomas Günzel

OC72: TTT Steidle 1981
Günther Stabe

OC72: Valvo_Dioden_Transistoren_1959
Thomas Günzel

Usage in Models

1= 1955? ; 1= 1955 ; 1= 1956?? ; 4= 1956? ; 19= 1956 ; 3= 1957?? ; 5= 1957? ; 45= 1957 ; 4= 1958?? ; 17= 1958? ; 60= 1958 ; 3= 1959?? ; 20= 1959? ; 74= 1959 ; 34= 1960?? ; 30= 1960? ; 71= 1960 ; 3= 1961?? ; 7= 1961? ; 53= 1961 ; 8= 1962?? ; 11= 1962? ; 39= 1962 ; 3= 1963?? ; 5= 1963? ; 17= 1963 ; 2= 1964?? ; 4= 1964? ; 7= 1964 ; 8= 1965?? ; 2= 1965? ; 8= 1965 ; 2= 1966 ; 1= 1973? ; 1= 1975?? ; 1= 9999

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 574

OC72*Box

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OC72

OC72*Box