12AB5
0 Tubes in archive
BrandRCA
ClassBeam Power Tube
BaseMiniature 9-contact
Filament12.6V @ 0.2mA
Construction
Primary TypeBeam Power
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesHeater-Voltage Range: 10 to 15.9 volts
Absolute Maximum Ratings
Plate Voltage315 V
Plate Dissipation12 W
Grid 2 Voltage285 V
H-C Voltage90 V
Audio Performance
Typical THD8%
Power Output4.5 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Cathode Bias) | 250V | 4000 | 75000 | - | 33.5mA |
| Class A Amplifier (Fixed Bias) | 250V | 4100 | 50000 | - | 45mA |
| Push-Pull Class AB1 Amplifier (Values for two tubes) | 250V | - | - | - | 70mA |
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