5V3A / 5AU4
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BrandRCA
ClassFull-Wave Vacuum Rectifier
BaseOctal
Construction
Primary TypeRectifier
Rectifier TypeVacuum
EnvelopeGlass
Sections2
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1550 V
Cathode Current415 mA
Audio Performance
Key Features
- Full-wave vacuum rectifier
- High DC requirements
- Glass octal envelope
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Capacitor-Input Filter | 425V | - | 50 | - | 350mA |
| Choke-Input Filter | 500V | - | - | - | 350mA |
Application Notes
Vertical mounting is preferred, but horizontal mounting is permissible if pins 2 and 4 are in vertical plane. Adequate ventilation is essential.
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