UABC80
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BrandPhilips
ClassTriple Diode Triode
BaseNoval
Filament28V @ 100mA
Construction
Primary TypeTriple Diode Triode
EnvelopeGlass
Sections4
Filament / Heater
Heater NotesIndirect heating, series supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1 W
Grid 1 Voltage-1.3 V
Cathode Current5 mA
H-C Voltage150 V
Audio Performance
Power Output0.05 W
Key Features
- Triple diode triode structure
- Suitable for FM or AM/FM receivers
- Low microphony
- High amplification factor
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 100V | 1300 | 54000 | 70 | 0.8mA |
| Triode Section | 170V | 1300 | 54000 | 70 | 1mA |
| Triode Section | 200V | 1250 | 56000 | 70 | 1mA |
| Triode Section | 250V | 1200 | 58000 | 70 | 1mA |
Application Notes
Recommended to connect pin 5 to earth. With regard to hum, a low AC voltage (<30V rms) between cathode and heater is recommended. This tube can be used without special microphonic precautions if input voltage is higher than 10mV for 50mW output.
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