25Z6
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BrandRCA
ClassRectifier
BaseOctal
Filament25V @ 300mA
Construction
Primary TypeFull-wave Rectifier
Rectifier TypeHigh-vacuum
EnvelopeGlass
Base MaterialSmall Wafer Octal 7-Pin
SectionsDouble diode
Filament / Heater
Heater NotesA.C. or D.C.
Absolute Maximum Ratings
Plate Voltage250 V
Cathode Current85 mA
Audio Performance
Key Features
- Heater-cathode type
- Universal (a.c.-d.c.) receivers
- Voltage doubler application
- Transformerless operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Voltage Doubler | 125V | - | - | - | 85mA |
| Half-Wave Rectifier | 125V | - | - | - | 85mA |
| Half-Wave Rectifier (with series resistor) | 250V | - | - | - | 85mA |
Application Notes
The 25Z6 is designed for use in transformerless receivers. It can be used as a half-wave rectifier with plates and cathodes connected in parallel, or as a voltage doubler. A filter of the condenser-input type is recommended.
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