7C7
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BrandSylvania
ClassSharp Cut-off RF Pentode
BaseLock-In 8 Pin
Filament7V @ 160mA
Construction
Primary TypePentode
EnvelopeT-9
Filament / Heater
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1.06 W
Grid 2 Voltage100 V
H-C Voltage90 V
Audio Performance
Key Features
- Sharp cut-off pentode
- Low heater current rating
- Lock-In base
- GT equivalent 6W7G
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 100V Operation | 100V | 1225 | 1200000 | - | 1.8mA |
| 250V Operation | 250V | 1300 | 2000000 | - | 2mA |
Application Notes
Sylvania Type 7C7 is a sharp cut-off pentode with a low heater current rating. In other respects it is similar to the older Type 6J7GT. Design data for use in resistance coupled circuits appears on Page 50.
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