Tube-number record
1A5G
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1A5G is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand Sylvania, construction Pentode, socket Octal, and maximum plate voltage 90 V. The archive does not yet hold a photographed example of this type.
BrandSylvania
ClassPower Pentode
BaseOctal
Construction
Primary TypePentode
EnvelopeT9-B
Filament / Heater
Absolute Maximum Ratings
Plate Voltage90 V
Grid 2 Voltage90 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 85 V | 800 | 300000 | 240 | 3.5 mA |
| Class A | 90 V | 850 | 300000 | 255 | 3.5 mA |
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.
Datasheets
Datasheet: 1A5G.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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