6CU8
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BrandSylvania
ClassMedium Mu Triode - Sharp Cutoff Pentode
BaseE9-1, Small Button 9-Pin
Filament6.3V @ 450mA
Construction
Primary TypeTriode-Pentode
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesControlled heater warm-up time: 11 seconds
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.5 W
Grid 2 Voltage300 V
H-C Voltage200 V
Audio Performance
Key Features
- Controlled heater warm-up time
- Medium mu triode
- Sharp cutoff pentode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 200V | 3300 | 5750 | 19 | 13mA |
| Pentode Section | 200V | 6200 | 300000 | - | 9.5mA |
Application Notes
The pentode section is suitable for use as an IF, video or agc amplifier. The triode section is well suited for use in low frequency oscillator, sync-separator, sync-clipper and phase-splitter circuits.
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