Tube-number record
1AJ4
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BrandPhilips
ClassR.F. Pentode
BaseMiniature 7-pin (B7G)
Construction
Primary TypePentode
EnvelopeT5 1/2
Sections1
Filament / Heater
MaterialCoated
Absolute Maximum Ratings
Plate Voltage90 V
Plate Dissipation0.25 W
Grid 2 Voltage90 V
Grid 1 Voltage-0.2 V
Cathode Current2.2 mA
Audio Performance
Key Features
- Low filament consumption
- Internal shield
- Standard 7-pin miniature base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF/IF Amplifier - 90V supply | 85 V | 750 | 700000 | — | 1.65 mA |
| RF/IF Amplifier - 67.5V supply | 64 V | 750 | 1000000 | — | 1.65 mA |
Datasheets
Datasheet: 1AJ4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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