12VP4A
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BrandSylvania
ClassCathode-Ray Tube
BaseSmall Shell Duodecal 5-Pin (B5-57)
Filament6.3V @ 600mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater Notes0.6 Amps +/- 10%
Absolute Maximum Ratings
Plate Voltage12000 V
Grid 1 Voltage-125 V
H-C Voltage125 V
Audio Performance
Key Features
- Magnetic focus
- Magnetic deflection
- Tinted neutral gray face plate
- External conductive coating
- Electron gun of triode construction
- Used with external ion-trap magnet
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Television Application | 11000V | - | - | - | - |
Application Notes
A peak heater-cathode voltage of -410 volts maximum may be applied for not more than 15 seconds during equipment warm-up periods.
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