7E7
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BrandSylvania
ClassDouble Diode-Pentode
BaseLoktal 8-pin
Filament7V @ 320mA
Construction
Primary TypeDouble Diode-Pentode
EnvelopeT9-G
SectionsDouble Diode, Pentode
Filament / Heater
Heater NotesNominal 7V for 130V AC/DC service, 6.3V typical
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage100 V
Audio Performance
Key Features
- LOKTAL construction
- No grid cap
- High gain pentode section
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 250V | 1300 | 700000 | - | 7.5mA |
Application Notes
The pentode section is used in H.F. and M.F. circuits. As an L.F. amplifier, the pentode section can be used in resistance-coupled circuits for high gain. Similar to type 6B8G.
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