Tube-number record
8226
0 archive entries
8226 is a tube type in the TubeDatabase archive (class: Beam Power Tube). Recorded specifications: brand RCA, year 1963, construction Beam tetrode / beam power, base Metal, socket Coaxial, maximum plate voltage 2500 V, and maximum plate dissipation 300 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassBeam Power Tube
BaseCoaxial
Filament6.3 V @ 3.2 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeCeramic-Metal (CERMOLOX)
Base MaterialMetal
Sections1
Filament / Heater
Heater NotesMatrix-Type, Oxide-Coated, Unipotential Cathode; Minimum heating time: 60 seconds
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier Class C (400 MHz) | 2500 V | — | — | 18 | 250 mA |
| RF Power Amplifier Class C (1215 MHz) | 1250 V | — | — | 18 | 250 mA |
Application Notes
Cooling requirements: Adequately limit radiator core temperature to 250°C using blower. Standby operation: Heater voltage can be reduced to 80% to conserve life.
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