P.220
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BrandMazda
ClassBattery Output Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Cathode Current10 mA
Audio Performance
Key Features
- Battery operated
- Standard 4-pin base
- High sensitivity
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 100V | 3400 | 3700 | 12.5 | - |
Application Notes
Recommended for sets where the consumption is limited to 5-7 milliamps. The grid circuit resistance should not exceed 2 megohms. May be used as a driver valve for PD.220.
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