3B25
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BrandRCA
ClassRectifier
BaseMedium-Shell Small 4-Pin with Bayonet
Construction
Primary TypeGas Rectifier
Rectifier TypeHalf-wave
EnvelopeT16
Base MaterialMedium-Shell Small 4-Pin with Bayonet
Sections1
Filament / Heater
Warm-up Time15s
Absolute Maximum Ratings
Plate Voltage4500 V
Cathode Current500 mA
Audio Performance
Key Features
- Half-wave gas rectifier
- Coated filament
- Any operating position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Half-Wave Single-Phase In-Phase Operation | 4500V | - | - | - | 500mA |
| Full-Wave Single-Phase In-Phase Operation | 1500V | - | - | - | 1000mA |
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