20UP4
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BrandTung-Sol
ClassCathode Ray Picture Tube
BaseSmall Shell Duodecal 5-Pin (B5-57)
Filament6.3V @ 600mA
Construction
Primary TypeCathode Ray
EnvelopeRectangular Glass
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage500 V
H-C Voltage180 V
Audio Performance
Key Features
- Electrostatic focus
- Magnetic deflection
- Grey filter faceplate
- External conductive coating
- Single field ion trap
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Television Application | 12000V | - | - | - | - |
Application Notes
Direct-view picture tube designed for use in television applications. Features a rectangular glass construction and unipotential cathode.
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