Tube-number record
6.F.12
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BrandMAZDA
ClassHigh Slope Screened R.F. Pentode
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 300 mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialMiniature
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated - for parallel operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2.5 W
Grid 2 Voltage250 V
H-C Voltage150 V
Audio Performance
Key Features
- High Slope
- Screened
- R.F. Pentode
- Indirectly heated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 250 V | 7500 | 90000 | 74 | 10 mA |
| Pentode | 200 V | 7200 | — | — | 8.3 mA |
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