1AF33
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BrandTESLA
ClassDiode - AF Pentode
BaseMiniature 7-pin
Construction
Primary TypePentode-Diode
EnvelopeGlass
Sections2
Filament / Heater
Materialoxide-coated
Absolute Maximum Ratings
Plate Voltage90 V
Plate Dissipation0.12 W
Grid 2 Voltage90 V
Cathode Current4.5 mA
Audio Performance
Key Features
- Directly heated
- Pentode as voltage amplifier
- Diode as detector
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 67.5V | 500 | 600000 | 300 | 1.6mA |
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