Tube-number record
307A
0 archive entries
307A is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Western Electric, construction Pentode, socket 5-pin, maximum plate voltage 500 V, and maximum plate dissipation 15 W. The archive does not yet hold a photographed example of this type.
BrandWestern Electric
ClassPentode
Base5-pin
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage500 V
Plate Dissipation15 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Audio | 200 V | — | — | — | 36.5 mA |
| Class A Audio | 250 V | — | — | — | 50 mA |
| Class A Audio (Maximum) | 300 V | — | — | — | 43 mA |
Application Notes
The 306A tube gives better performance in audio-frequency applications and is preferable except where filament characteristics preclude its use. Suppressor grid should not be driven more than 20V positive.
Datasheets
Datasheet: 307A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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