3D23
0 Tubes in archive
BrandLewis Electronics
ClassHigh Vacuum Tube Multi-Electrode
Base4-pin Medium Ceramic
Construction
Primary TypeTetrode
EnvelopeGlass
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation35 W
Grid 2 Voltage400 V
Grid 1 Voltage350 V
Cathode Current125 mA
Audio Performance
Key Features
- Thoriated Tungsten Filament
- Medium Ceramic Base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B Radio-Frequency Power Amplifier | 1500V | 2750 | - | 65 | 45mA |
| Class C Radio-Frequency Power Amplifier and Oscillator, Plate Modulated | 1000V | - | - | - | 85mA |
| Class C Radio-Frequency Power Amplifier and Oscillator, Key Down | 1500V | - | - | - | 110mA |
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