Tube-number record
EL 12 SPEC
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BrandTesla
ClassPower Pentode
Base8-pin
Filament6.3 V @ 1.2 mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialBakelite
SectionsSingle
Filament / Heater
MaterialOxide
Warm-up Time25s
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage425 V
Plate Dissipation20 W
Grid 2 Voltage425 V
Grid 1 Voltage-19 V
Cathode Current90 mA
H-C Voltage50 V
Audio Performance
Typical THD5%
Power Output43 W
Key Features
- Top cap anode connection
- Push-pull operation
- Indirectly heated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class AB Push-Pull | 425 V | 10000 | 50000 | — | 42 mA |
Application Notes
Suitable for Class AB push-pull amplifiers and small transmitters. Not recommended for new equipment designs.
Datasheets
Datasheet: EL12spec.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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