Tube-number record
8441
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BrandRCA
ClassHigh-Mu Triode
BaseSubminiature
Filament6 V @ — mA
Construction
Primary TypeTriode
EnvelopeMetal Shell MT4
Base MaterialCeramic
Sections1
Filament / Heater
Heater NotesPower input: 0.85 W. Designed to operate from battery supplies within +/- 10% of specified center voltage.
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1 W
Grid 1 Voltage-55 V
Cathode Current15 mA
H-C Voltage100 V
Audio Performance
Key Features
- Nuvistor Type
- High shock resistance
- Expendable equipment design
- Coated Unipotential Cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 110 V | 9400 | 6800 | 64 | 7 mA |
Application Notes
Used in Sonobuoy and other expendable equipment. Designed for high-reliability applications.
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