Tube-number record
8020
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BrandPhilips
ClassHalf-wave vacuum rectifier
Base4-pin
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeGlass
Base MaterialMedium 4-pin
Sections1
Filament / Heater
Materialthoriated tungsten
Warm-up Time5s
Absolute Maximum Ratings
Plate Voltage40000 V
Plate Dissipation75 W
Cathode Current100 mA
Audio Performance
Key Features
- thoriated tungsten filament
- high voltage rectifying
- surge limiting
- direct heating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Voltage Drop | 200 V | — | — | — | 100 mA |
| Surge Limiter Operation | 10000 V | — | — | — | 2000 mA |
Application Notes
Used in radar equipment for protection of the modulator circuit and the magnetron against excessive voltages, and in dust precipitation equipment.
Datasheets
Datasheet: 8020.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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