Tube-number record
7719
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BrandTung-Sol
ClassTriode
BaseNoval (B9A)
Filament6.3 V @ 450 mA
Construction
Primary TypeTriode
EnvelopeGlass Bulb
SectionsSingle
Filament / Heater
Heater NotesParallel and Series operation supported
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation6 W
Cathode Current40 mA
H-C Voltage200 V
Audio Performance
Key Features
- High perveance
- Computer applications
- Minimized interface impedance
- Unipotential cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 300 V | 4500 | 7100 | 25 | 4 mA |
Application Notes
Intended for computer applications; cathode material chosen to minimize interface impedance development.
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