Tube-number record
21BSP4
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BrandSylvania
ClassTelevision Picture Tube
BaseDuodecal
Filament6.3 V @ 0.6 mA
Construction
Primary TypeOther / special
EnvelopeRectangular Glass
SectionsSingle
Filament / Heater
Heater NotesHeater warm-up time: 11 seconds
Absolute Maximum Ratings
Plate Voltage22000 V
Grid 2 Voltage550 V
Grid 1 Voltage-155 V
H-C Voltage450 V
Audio Performance
Key Features
- Aluminized Screen
- Spherical Faceplate
- Gray Filter Glass
- Single Field Ion Trap
- External Conductive Coating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 16000 V | — | — | — | — |
Application Notes
X-ray radiation shielding may be necessary if operated at higher than manufacturer's Maximum Rated Anode Voltage or 16,000 volts, whichever is less.
Datasheets
Datasheet: 21BSP4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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