Tube-number record
6677/6CL6
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BrandSylvania
ClassBeam Power Pentode
BaseNoval (B9A)
Filament6.3 V @ 650 mA
Construction
Primary TypePentode
EnvelopeT-6 1/2
SectionsSingle
Filament / Heater
Heater NotesDesigned for mobile communications equipment; survives supply variations
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation8.5 W
Grid 2 Voltage330 V
Grid 1 Voltage-50 V
H-C Voltage100 V
Audio Performance
Typical THD8%
Power Output2.8 W
Key Features
- Mobile communications equipment use
- Withstands normal variations in supply voltage
- High on-off cycling capability
- Coated Unipotential cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 250 V | 11000 | 150000 | — | 30 mA |
Application Notes
Type 6677/6CL6 is specifically designed for mobile operation and is electrically equivalent to Type 6CL6.
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