Tube-number record
384
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BrandWestern Electric
ClassPower Pentode
Filament6.3 V @ 450 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation6.5 W
Grid 2 Voltage250 V
Audio Performance
Typical THD10%
Power Output2.5 W
Key Features
- Indirectly heated cathode
- Power pentode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 | 250 V | 4000 | 100000 | 400 | 26 mA |
Application Notes
Commonly used in telephone and audio equipment by Western Electric.
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