Tube-number record
300A
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BrandWestern Electric
ClassModerate power, filamentary triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass
Sectionssingle
Filament / Heater
MaterialFilamentary
Absolute Maximum Ratings
Plate Voltage450 V
Plate Dissipation40 W
Grid 1 Voltage-130 V
Cathode Current100 mA
Audio Performance
Power Output17.8 W
Key Features
- Moderate power
- Filamentary triode
- Low plate voltages
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Operating Conditions | 250 V | — | — | — | 50 mA |
| Recommended Operating Conditions | 350 V | — | — | — | 60 mA |
| Recommended Operating Conditions | 450 V | — | — | — | 60 mA |
| Maximum Operating Conditions | 450 V | — | — | — | 80 mA |
Application Notes
Audio-frequency amplifier in positions where power outputs of approximately 10 watts or less are required.
Datasheets
Datasheet: 300A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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