Tube-number record
6Ф3П
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BrandSvetlana
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 810 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage275 V
Plate Dissipation8 W
Grid 2 Voltage250 V
Cathode Current60 mA
H-C Voltage100 V
Audio Performance
Key Features
- Low frequency amplifier
- Beam plates in pentode section
- Indirectly heated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode section | 170 V | 7000 | — | — | 41 mA |
| Triode section | 170 V | 2500 | — | — | 2.5 mA |
Application Notes
Used in low frequency amplifiers and television vertical deflection circuits.
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