6FN5
0 Tubes in archive
BrandMAZDA BELVU
ClassPower Pentode
BaseOctal
Filament6.3V @ 1.65mA
Construction
Primary TypePentode
EnvelopeT12-20
Base MaterialOctal 8C18-8
SectionsSingle
Filament / Heater
Heater NotesIndirect heating, parallel supply
Absolute Maximum Ratings
Plate Voltage275 V
Plate Dissipation17.6 W
Grid 2 Voltage275 V
Grid 1 Voltage-300 V
Cathode Current330 mA
H-C Voltage250 V
Audio Performance
Key Features
- Line sweep amplifier
- High peak anode voltage
- High peak cathode current
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Nominal 1 | 70V | - | - | - | 495mA |
| Nominal 2 | 70V | - | - | - | 465mA |
| Nominal 3 | 100V | 17000 | 3500 | - | - |
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