Tube-number record
6HL8
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BrandSylvania
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 600 mA
Construction
Primary TypePentode
EnvelopeT-6 1/2
Sections2
Filament / Heater
Heater NotesHeater warm-up time 11 seconds
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation2.5 W
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- Medium mu triode
- High Gm pentode
- Coated Unipotential Cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 125 V | 7000 | 5000 | 40 | 12.5 mA |
| Pentode Section | 125 V | 10000 | 150000 | — | 12 mA |
Application Notes
The triode is designed for sync separator, voltage amplifier or general purpose use. The pentode can be used as a video IF amp., AGC amp. and reactance tube.
Datasheets
Datasheet: 6HL8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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