Tube-number record
A63-11X
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BrandMullard
ClassColour Television Tube
BaseCRT base (B12 family)
Filament6.3 V @ 900 mA
Construction
Primary TypeOther / special
EnvelopeReinforced tube envelope
Base MaterialPlastic shell
Sections3 guns
Filament / Heater
Heater NotesHeater supply should be regulated for maximum cathode life.
Absolute Maximum Ratings
Plate Voltage27500 V
Grid 2 Voltage400 V
Cathode Current1 mA
H-C Voltage250 V
Audio Performance
Key Features
- Advanced red phosphor (europium activated)
- Temperature compensated shadow-mask
- Reinforced tube envelope (no separate safety screen required)
- Unity current ratio for white point
- Electrostatic focusing
- Magnetic deflection
- Metal-backed screen
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Each gun | 25000 V | — | — | — | 0.8 mA |
Application Notes
The tube does not emit X-radiation above maximum dosage if operated within 27.5kV. External conductive coating M must be connected to chassis. The metal band B should be connected to chassis or via a leakage path.
Datasheets
Datasheet: A63-11X.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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