Tube-number record
21BTP4
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21BTP4 is a tube type in the TubeDatabase archive (class: Television Picture Tube). Recorded specifications: brand Sylvania, construction Display / CRT, base Plastic, socket Duodecal, and maximum plate voltage 22000 V. The archive does not yet hold a photographed example of this type.
BrandSylvania
ClassTelevision Picture Tube
BaseDuodecal
Filament6.3 V @ 0.6 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic
SectionsSingle
Filament / Heater
MaterialAluminized P4
Warm-up Time11s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 16000 V | — | — | — | — |
Application Notes
Heater warm-up time is the time required for the voltage across the heater terminals to increase to 5.0 volts in the JETEC test circuit.
Datasheets
Datasheet: 21BTP4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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