Tube-number record
12AY7
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Equivalent and related tube numbers
Commonly cross-referenced designations for 12AY7. Compatibility is not guaranteed. Before substituting, verify socket and pinout, heater voltage and current, bias requirements, and maximum ratings against the relevant manufacturers’ datasheets.
BrandGeneral Electric
ClassTwin Triode
BaseNoval (B9A)
Filament12.6 V @ 150 mA
Construction
Primary TypeTriode
EnvelopeT-6 1/2 Glass
SectionsTwin
Filament / Heater
Heater NotesSeries/Parallel connection available
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 250 V | 1750 | 25000 | 44 | 3 mA |
| Low-Level-Amplifier Service | 150 V | — | — | — | — |
Application Notes
Designed primarily for use in low-level stages of high-gain audio-frequency amplifiers.
Datasheets
Datasheet: 12AY7.pdf
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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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