Tube-number record
6CM8
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BrandSylvania
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 450 mA
Construction
Primary TypePentode
EnvelopeT6 1/2
Sections2
Filament / Heater
Heater NotesControlled heater warm-up time
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2 W
Grid 2 Voltage300 V
H-C Voltage200 V
Audio Performance
Key Features
- Controlled heater warm-up time
- High-mu triode
- Sharp cut-off pentode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 250 V | 2000 | 50000 | 100 | 1.8 mA |
| Pentode Section | 200 V | 6200 | 600000 | — | 9.5 mA |
Application Notes
The pentode section may be used as an IF amplifier, video amplifier, AGC amplifier and reactance tube.
Datasheets
Datasheet: 6CM8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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