Tube-number record
21CDP4
0 archive entries
21CDP4 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand TUNG-SOL, year 1957, construction Display / CRT, base Small Shell Duodecal 6-Pin, socket Duodecal, and maximum plate voltage 22000 V. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassCathode Ray Tube
BaseDuodecal
Filament6.3 V @ 450 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular Glass
Base MaterialSmall Shell Duodecal 6-Pin
Sections1
Filament / Heater
Heater NotesWarm-up time 11.0 seconds
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 16000 V | — | — | — | — |
Application Notes
The 21CDP4 and 21CDP4A are direct view picture tubes designed for television applications. They are identical except for the aluminized screen on the 21CDP4A.
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