Tube-number record
8KR8
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BrandSylvania
ClassReceiving Tube
BaseNoval (B9A)
Filament8 V @ 600 mA
Construction
Primary TypeMulti-section
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesSeries circuit operation
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation5 W
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- Sharp cutoff pentode
- Medium mu triode
- Video amplifier service
- Sync separator
- Sound IF amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 125 V | 10400 | 4400 | 46 | 15 mA |
| Pentode Section (Low Voltage) | 35 V | — | — | — | 54 mA |
| Pentode Section | 200 V | 20000 | 60000 | — | 19.5 mA |
Application Notes
Pentode section designed for video amplifier service; triode for general purpose amplifier/sync separator usage.
Datasheets
Datasheet: 8KR8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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