Tube-number record
21FBP22
0 archive entries
21FBP22 is a tube type in the TubeDatabase archive (class: Color Picture Tube). Recorded specifications: brand RCA, year 1961, construction Other / special, base Small-Shell Neodiheptal, socket CRT base (B12 family), and maximum plate voltage 27500 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassColor Picture Tube
BaseCRT base (B12 family)
Filament6.3 V @ 1800 mA
Construction
Primary TypeOther / special
EnvelopeAll-Glass
Base MaterialSmall-Shell Neodiheptal
Sections3
Filament / Heater
Heater NotesParalleled heaters within tube; Current measured at 6.3V
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Example at 20000V Ultor | 20000 V | — | — | — | — |
| Example at 25000V Ultor | 25000 V | — | — | — | — |
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