Tube-number record
D3F
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BrandPhilips Miniwatt
ClassPentode
BaseSpecial / none
Construction
Primary TypePentode
EnvelopeButton
Sections1
Filament / Heater
MaterialDirect
Absolute Maximum Ratings
Plate Voltage135 V
Plate Dissipation0.3 W
Grid 2 Voltage70 V
Grid 1 Voltage-0.2 V
Cathode Current5 mA
Audio Performance
Key Features
- Ultrakurzwellengeräte
- Knopfröhre
- Battery operated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Characteristic | 135 V | 600 | 800000 | — | 1.7 mA |
Application Notes
Pentode for ultra short wave apparatus
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