Tube-number record
6HJ8
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BrandSYLVANIA
ClassDIODE PENTODE
BaseNoval (B9A)
Filament6.3 V @ 450 mA
Construction
Primary TypeMulti-section
EnvelopeT-6 1/2
Base MaterialSmall Button 9-Pin
Sections2
Filament / Heater
Heater NotesSeries or Parallel operation; Heater warm-up time is 11 seconds.
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation3.2 W
Grid 2 Voltage330 V
Cathode Current5 mA
H-C Voltage200 V
Audio Performance
Key Features
- Miniature diode pentode
- Sharp cutoff pentode section
- High perveance diode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 125 V | 9300 | 200000 | — | 11.5 mA |
Application Notes
The pentode section has sharp cutoff characteristics and may be used as an IF or AGC amplifier. The high perveance diode can be used as an RF detector, video detector or dc restorer.
Datasheets
Datasheet: 6HJ8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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