102D
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BrandWestern Electric
ClassVoltage-amplifier triode
BaseMedium four-pin, bayonet type
Construction
Primary Typetriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage190 V
Audio Performance
Key Features
- Filamentary voltage-amplifier triode
- Audio-frequency voltage amplifier
- Detector
- Modulator
- Special contact metal on base pins
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 130V | 370 | 80000 | 29.4 | 0.36mA |
| Typical Operation | 130V | 470 | 63000 | 29.8 | 0.58mA |
| Typical Operation | 160V | 550 | 54000 | 29.9 | 0.8mA |
| Maximum Operating Conditions | 190V | 550 | 54000 | 29.8 | 0.83mA |
| Maximum Operating Conditions | 190V | 700 | 43000 |
Application Notes
The filament of this tube is designed to operate on a current basis and should be operated at as near the rated current (1.0A) as is practicable. Less severe operating conditions should be selected to maximize tube life.
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