Tube-number record
12J5
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BrandGeneral Electric
ClassTriode
BaseOctal
Filament12.6 V @ 150 mA
Construction
Primary TypeTriode
EnvelopeMT-8 Metal Shell
SectionsSingle
Filament / Heater
Heater NotesA-C or D-C
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.5 W
Cathode Current20 mA
H-C Voltage90 V
Audio Performance
Typical THD5%
Key Features
- Medium-mu triode
- General-purpose
- Coated Unipotential Cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 90 V | 3000 | 6700 | 20 | 10 mA |
| Class A Amplifier | 250 V | 2600 | 7700 | 20 | 9 mA |
Application Notes
Identical to the 6J5 except for heater ratings. The d-c resistance in the grid circuit under maximum rated conditions should not exceed 1.0 megohm.
Datasheets
Datasheet: 12J5.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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