7027-A
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BrandRCA
ClassBeam Power Tube
BaseSmall-Wafer Octal 8-Pin
Filament6.3V @ 900mA
Construction
Primary TypeBeam Power Pentode
EnvelopeT12
Base MaterialSmall-Wafer Octal 8-Pin with "950" Sleeve
SectionsSingle
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage600 V
Plate Dissipation35 W
Grid 2 Voltage500 V
H-C Voltage200 V
Audio Performance
Typical THD2%
Power Output76 W
Key Features
- High-fidelity audio-amplifier applications
- Beam power tube
- Unipotential cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 250V | 6000 | 22500 | - | 72mA |
| Push-Pull Class AB1 Fixed Bias | 540V | - | - | - | 100mA |
Application Notes
The bulb becomes hot during operation. To insure adequate cooling, it is essential that free circulation of air be provided around the 7027-A.
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