Tube-number record
2E31
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BrandRaytheon
ClassSubminiature Pentode
BaseFlexible / flying leads
Construction
Primary TypePentode
EnvelopeT-2X3 Glass
Base MaterialGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage45 V
Grid 2 Voltage45 V
Cathode Current1 mA
Audio Performance
Key Features
- Filament type
- Fully-shielded
- Subminiature construction
- Flexible terminal leads
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 22.5 V | 500 | 350000 | — | 0.4 mA |
Application Notes
Designed for use as an RF or IF amplifier in applications requiring economy of space, weight and battery drain. Filament voltage must never exceed 1.55 volts.
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