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BrandSiemens & Halske
ClassOutput Triode
BaseEuropa
Filament4V @ 1.1mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide
Heater NotesDirectly heated
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation20 W
Cathode Current80 mA
Audio Performance
Typical THD5%
Power Output4 W
Key Features
- Directly heated cathode
- Oxide cathode
- Power amplifier triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 | 100V | 5500 | 730 | 4 | 55mA |
| Class A1 | 200V | 6500 | 620 | 4 | 70mA |
| Class A1 | 300V | 5800 | 670 | 3.9 | 60mA |
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