6BH5
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BrandPhilips
ClassVariable Mu Pentode
BaseNoval
Filament6.3V @ 0.2mA
Construction
Primary TypePentode
EnvelopeT6.5
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated cathode
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2 W
Grid 2 Voltage300 V
Grid 1 Voltage-1.3 V
Cathode Current10 mA
H-C Voltage100 V
Audio Performance
Key Features
- Variable Mu
- Small button noval 9-pin
- Internal shield
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF/IF Amplifier | 250V | 2200 | 1100000 | 18 | 6mA |
Application Notes
Designed as a variable mu pentode for RF or IF amplifier stages. Grid 2 voltage can be supplied via a series resistor of 90,000 Ohms.
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