6HK8
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BrandToshiba
ClassMedium-Mu Twin Triode
BaseSmall-Button Noval 9-Pin
Filament6.3V @ 400mA
Construction
Primary TypeMedium-Mu Twin Triode
EnvelopeT6-1/2
Sections2
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage150 V
Plate Dissipation2 W
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- High transconductance
- Low noise
- Low interelectrode capacitance
- Designed for Cascode Amplifier use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier (Each section) | 90V | 8000 | 4500 | 36 | 8.5mA |
| Cascode Amplifier | 180V | 9500 | - | - | 12mA |
| Mixer | 100V | 4200 | - | - | 7mA |
Application Notes
Specifically designed for use as a cascode amplifier in high-gain TV tuners and as RF amplifier/frequency converter for FM receivers.
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