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12J5

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BrandGeneral Electric
ClassTriode
BaseSmall Wafer Octal 6-Pin
Filament12.6V @ 150mA

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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Amplifier90V300067002010mA
Class A Amplifier250V26007700209mA

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.

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