1A5G
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BrandSylvania
ClassPower Pentode
BasePetit octal 7 broches (6-X)
Construction
Primary TypePentode
EnvelopeT9-B
Filament / Heater
Absolute Maximum Ratings
Plate Voltage90 V
Grid 2 Voltage90 V
Audio Performance
Typical THD7%
Power Output0.115 W
Key Features
- Low power consumption
- Direct battery operation
- Class A audio output
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 85V | 800 | 300000 | 240 | 3.5mA |
| Class A | 90V | 850 | 300000 | 255 | 3.5mA |
Application Notes
Designed for battery-powered receivers with low consumption. Can operate directly on a 1.5V battery without a ballast tube. Automatic bias is recommended as B-battery voltage drops.
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