Tube-number record
7212
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BrandRCA
ClassBeam Power Tube
BaseOctal
Filament6.3 V @ 1250 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeT12
Base MaterialMicanol
SectionsSingle
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage750 V
Plate Dissipation25 W
Grid 2 Voltage250 V
Grid 1 Voltage-150 V
Cathode Current150 mA
H-C Voltage135 V
Audio Performance
Power Output131 W
Key Features
- Ruggedized
- Severe shock and vibration resistant
- Beam power tube
- CW Input up to 175 Mc
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class AB1 CCS Push-Pull | 600 V | 7000 | — | 4.5 | 100 mA |
| Class C Telegraphy ICAS | 750 V | — | — | — | 120 mA |
Application Notes
Specifically designed for use under severe shock and vibration. Features a small Micanol-wafer octal 8-pin base with 770 sleeve.
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