8108
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BrandAmperex
ClassDisc Seal Triode
BaseOctal
Filament6.3V @ 0.735mA
Construction
Primary TypeTriode
EnvelopeDisc Seal
SectionsSingle
Filament / Heater
Heater NotesHeater voltage tolerance 2%
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation12.5 W
Grid 1 Voltage-50 V
Cathode Current70 mA
H-C Voltage50 V
Audio Performance
Power Output2 W
Key Features
- CW amplifier
- Oscillator
- Frequency doubler
- Frequency tripler
- Long life
- Sink cooling
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Amplifier | 180V | 25000 | - | 43 | 30mA |
Application Notes
The Amperex 8108 is a disc seal triode designed for use as a CW amplifier, oscillator, frequency doubler or frequency tripler to frequencies over 6000 Mc/sec. Saturation power of more than 2 watts with an operating voltage of only 180 volts.
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