Tube-number record
6AJ8
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BrandPhilips
ClassTriode-Heptode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
SectionsTriode, Heptode
Filament / Heater
MaterialCoated unipotential
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1.7 W
Grid 2 Voltage125 V
Grid 1 Voltage-1.3 V
Cathode Current12.5 mA
H-C Voltage100 V
Audio Performance
Key Features
- Triode-Heptode for FM and TV receivers
- Internal shield on pin 3
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Heptode section as mixer | 250 V | 175 | 1000000 | — | 3.25 mA |
| Heptode section as HF/IF amplifier | 250 V | 2400 | 700000 | 20 | 6.5 mA |
| Triode section typical | 100 V | 3700 | — | 22 | 13.5 mA |
Application Notes
The 6AJ8 as frequency changer can be used in combination with 6BY7 or 6N8 as I.F. amplifier.
Datasheets
Datasheet: 6AJ8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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