PCF 80
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BrandPHILIPS
ClassTriode-Pentode
BaseNoval
Filament9V @ 300mA
Construction
Primary TypeTriode-Pentode
EnvelopeGlass
SectionsSeparate cathodes
Filament / Heater
Heater NotesIndirect by A.C. or D.C. series supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.7 W
Grid 2 Voltage200 V
Grid 1 Voltage-1.3 V
Cathode Current14 mA
H-C Voltage200 V
Audio Performance
Key Features
- Separate cathodes
- Frequency changer in television receivers
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode section | 170V | 6200 | 400000 | 47 | 10mA |
| Triode section | 100V | 5000 | - | 20 | 14mA |
| Frequency changer (Pentode) | 170V | 2200 | 800000 | - | 6.5mA |
Application Notes
It is recommended to use the tube in a Colpitts type of circuit and not in a Hartley type. For frame output application, peak cathode current should be limited to 100 mA.
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