6Ф4П
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BrandSoviet
ClassTriode-Pentode
BaseNoval
Filament6.3V @ 720mA
Construction
EnvelopeGlass
Base MaterialGlass
SectionsTriode, Pentode
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation4 W
Grid 2 Voltage250 V
Grid 1 Voltage-200 V
Cathode Current40 mA
H-C Voltage150 V
Audio Performance
Key Features
- Miniature design
- Rigid leads
- Oxide-coated cathode
- Resistant to high humidity
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Part | 200V | 4000 | 16250 | 65 | 3mA |
| Pentode Part | 170V | 11000 | 100000 | - | 18mA |
Application Notes
Pentode part designed for output stages of video and LF amplifiers. Triode part suitable for AGC circuits and LF preamplifiers in TV and broadcast receivers.
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