PCF 801
0 Tubes in archive
BrandTELEFUNKEN
ClassRemote cutoff pentode-triode
BasePico 9 - Noval
Filament85V @ 0.3mA
Construction
Primary TypeTriode-Pentode
EnvelopeGlass
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesDC/AC series heating
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2 W
Grid 2 Voltage250 V
Grid 1 Voltage-50 V
Cathode Current18 mA
H-C Voltage100 V
Audio Performance
Key Features
- Indirectly heated
- Remote cutoff pentode
- TV-oscillator and mixer applications
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode (Measuring values) | 100V | 9000 | - | 20 | 15mA |
| Pentode (Measuring values) | 170V | 11000 | 350000 | 55 | 10mA |
| Triode as Oscillator | 200V | 3700 | 8200 | - | 16mA |
Application Notes
Special precautions must be taken to prevent the tube from becoming dislodged from the socket.
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