From the 50's perhaps. A long black Ge with a dot near one leg. From an old reel to reel tape recorder. The dot is the collector, center leg is base and other is the emitter? Thank you for your time.
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vor 17 Jahren
Pinout needed: Telefunken 603 tranisistor
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vor 17 Jahren
I'm sorry, I do not speak German. I need the correct "pinout" for this obsolete Telefunken transistor from the 50's. A long black Germanium type with a dot near one leg. From an old reel to reel tape recorder. The dot is the collector, center leg is base and other is the emitter? Thank you for your time.
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vor 17 Jahren
funky schrieb:
[OC603]Right.
Regards, Dieter
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vor 17 Jahren
Dieter Wiedmann schrieb:
OC 603: Transistor for low noise input-stages. The dot's colour indicates the transistor's hfe (ß):
red 20 ... 30 orange 30 ... 40 yellow 40 ... 50 green 50 ... 60 blue 60 ... 75 violet 75 ... 100 white > 100
HTH
Reinhard
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vor 17 Jahren
From 1973 manual
OD603 (confirmed OD not OC) by Telefunken pnp Ge Vcbo 40 Vceo 30 Ic max 10mA Ptot 30mW Icbo at Vcbo 0.025 uA
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/
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vor 17 Jahren
n cook schrieb:
O_D_ 603? Are you really sure? That's a Ge pnp transistor for AF power stages! From 1969 manual:
abs. max. ratings ________
-Vcbo 40 V I I metal case
-Vceo 30 V __I_______I__
-Vebo 10 V I_____________ICollector connected to case
-Ic 3 A |||
||| B: yellow insulation ||| E: green insulation |||
O_C_ 603 Ge pnp transistor for low noise input-stages.
abs. max. ratings ___
-Vcbo 22 V / \
-Vceo 12 V I I case: black painted glass
-Vebo 10 V I I
-Ic 50 mA I I
||| ||| ||| ||| EBC
HTH
Reinhard
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vor 17 Jahren
Yes curious, the 1973 UK Semicon data book mentions the data as I transcribed along with manufacturer being Telefunken, also mentions a variant OD603/50. But a German 1987 ECO (Electronic+Acoustic GmbH) book mentions the one you refer to along with variant OD603, but no mention of Telefunken, completely different characteristics. Crossposted to de.sci.electronics
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics
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vor 17 Jahren
danke