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21FBP22

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BrandRCA
ClassColor Picture Tube
BaseSmall-Shell Neodiheptal 12-Pin (JEDEC No.B12-131)
Filament6.3V @ 1800mA

Construction

Primary TypeThree-gun, Graded-hole, Shadow-mask
EnvelopeAll-Glass
Base MaterialSmall-Shell Neodiheptal
Sections3

Filament / Heater

Heater NotesParalleled heaters within tube; Current measured at 6.3V

Absolute Maximum Ratings

Plate Voltage27500 V
Grid 2 Voltage650 V
Grid 1 Voltage-400 V
H-C Voltage200 V

Audio Performance

Key Features
  • Aluminized Tricolor Phosphor-Dot Screen
  • P22-Al-Sulfide Type Phosphor
  • Spherical Filterglass Faceplate
  • Magnetic Convergence

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Example at 20000V Ultor20000V----
Example at 25000V Ultor25000V----

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