Tube-number record
7690
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BrandCBS
ClassMedium-mu Triple Triode
BaseCompactron
Filament6.3 V @ 450 mA
Construction
Primary TypeTriode
EnvelopeT-7 1/2
Base MaterialGold plated base pins
Sections3
Filament / Heater
Heater NotesContinuous-wound coil heater
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation2.8 W
H-C Voltage200 V
Audio Performance
Key Features
- Gold plated base pins
- Continuous-wound coil heater
- Extreme reliability
- Stable characteristics
- Long life
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Each Section) | 100 V | 4000 | 15000 | 60 | 3.7 mA |
| Class A Amplifier (Each Section) | 250 V | 9500 | 10900 | 60 | 10 mA |
Datasheets
Datasheet: 7690.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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