Tube-number record
21DJP4
0 archive entries
21DJP4 is a tube type in the TubeDatabase archive (class: Television Picture Tube). Recorded specifications: brand Sylvania, year 1958, 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 @ 0.3 mA
Construction
Primary TypeDisplay / CRT
EnvelopeJ171D or JI71E
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesHeater warm-up time 11 seconds
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 16000 V | — | — | — | — |
Application Notes
X-ray radiation shielding may be necessary for protection if operated above 16,000 volts. External conductive coating must be grounded.
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