9U8
0 Tubes in archive
BrandBRIMAR
ClassTriode-Pentode
BaseE9-1 miniature glass button 9-pin
Filament9.45V @ 300mA
Construction
Primary TypeTriode-Pentode
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater Notesac or dc
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.8 W
Grid 2 Voltage300 V
H-C Voltage90 V
Audio Performance
Key Features
- Coated unipotential cathode
- Identical to type 6U8 except for heater ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Unit | 150V | 8500 | 5000 | 40 | 18mA |
| Pentode Unit | 200V | 5200 | 400000 | - | 10mA |
Application Notes
Mounting position: Any
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