Tube-number record
21DEP4
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BrandSylvania
ClassTelevision Picture Tube
BaseCRT base (B7 family)
Filament6.3 V @ 600 mA
Construction
Primary TypeRectangular Glass
EnvelopeSpherical Faceplate, Gray Filter Glass
Base MaterialPlastic
SectionsSingle
Filament / Heater
Warm-up Time11s
Heater NotesHeater warm-up time is 11 seconds
Absolute Maximum Ratings
Plate Voltage19800 V
Grid 2 Voltage550 V
Grid 1 Voltage-154 V
H-C Voltage450 V
Audio Performance
Key Features
- Electrostatic Focusing
- Magnetic Deflection
- Aluminized P4 Phosphor
- No Ion Trap
- External Conductive Coating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 17000 V | — | — | — | — |
Application Notes
X-ray radiation shielding may be necessary if operated at higher than 16,000 volts.
Datasheets
Datasheet: 21DEP4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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