Tube-number record
30P12
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30P12 is a tube type in the TubeDatabase archive (class: Beam Power Tube). Recorded specifications: brand Siemens Edison Swan Limited, construction Tetrode, base Noval, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 6 W. The archive does not yet hold a photographed example of this type.
BrandSiemens Edison Swan Limited
ClassBeam Power Tube
BaseNoval (B9A)
Filament12.6 V @ 0.3 mA
Construction
Primary TypeTetrode
EnvelopeGlass
Base MaterialNoval
SectionsSingle
Filament / Heater
Heater NotesSuitable for AC or AC/DC operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation6 W
Grid 2 Voltage250 V
Cathode Current50 mA
H-C Voltage150 V
Audio Performance
Typical THD5%
Power Output2.25 W
Key Features
- Designed for output stage of Audio Amplifiers
- Designed for Frame Time Bases
- B9A Noval Base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Audio Output | 170 V | 8300 | — | — | 31 mA |
Application Notes
The grid to cathode circuit resistance must not exceed 0.5 megohms with cathode self-bias.
Datasheets
Datasheet: 30P12.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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