Tube-number record
5EU8
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BrandTung-Sol
ClassTriode-Pentode
BaseNoval (B9A)
Filament4.7 V @ 600 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Base MaterialMiniature Button
Sections2
Filament / Heater
Heater NotesControlled cathode warm-up characteristic
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation3 W
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- 9 Pin miniature type
- Triode oscillator and Pentode mixer application
- Any mounting position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode | 150 V | 8500 | 5000 | 40 | 18 mA |
| Pentode | 125 V | 6400 | 80000 | — | 12 mA |
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