6BU8
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BrandGeneral Electric
ClassTwin Pentode
BaseSmall Button 9-Pin
Filament6.3V @ 0.3mA
Construction
Primary TypeTwin Pentode
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1.1 W
Grid 2 Voltage150 V
Grid 1 Voltage-50 V
Cathode Current12 mA
H-C Voltage200 V
Audio Performance
Key Features
- Miniature multisection tube
- Combined sync-AGC tube
- Separate plates and No. 3 grids
- Common screen, grid 1, and cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Both sections operating | 100V | - | - | - | 2.2mA |
| Each section separately | 100V | 1500 | - | - | 2.2mA |
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