Tube-number record
295A
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BrandWestern Electric
ClassTriode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialBayonet
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage1250 V
Plate Dissipation100 W
Cathode Current175 mA
Audio Performance
Typical THD5%
Power Output250 W
Key Features
- Air-cooled
- Thoriated tungsten filament
- Graphite anodes
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Characteristics | 1250 V | 4200 | 6000 | 25 | 80 mA |
| Class B Audio Amplifier (2 tubes) | 1250 V | — | — | — | 160 mA |
| Class C RF Oscillator | 1250 V | — | — | — | 150 mA |
Application Notes
The tube should not be subjected to mechanical shock. A free circulation of air must be provided. Graphite anodes should not show a red color during operation. Overload protection should trigger if plate current exceeds 200 mA.
Datasheets
Datasheet: 295A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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