Tube-number record
7B7
0 archive entries
7B7 is a tube type in the TubeDatabase archive (class: Variable-mu pentode). Recorded specifications: brand Sylvania, construction Pentode, base Metal, socket Loctal, and maximum plate voltage 250 V. The archive does not yet hold a photographed example of this type.
BrandSylvania
ClassVariable-mu pentode
BaseLoctal
Filament7 V @ 160 mA
Construction
Primary TypePentode
EnvelopeT9-G
Base MaterialMetal
SectionsSingle
Filament / Heater
Heater NotesNominal 7.0V for 130V line service, 6.3V standard operation
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF/IF Amplifier | 250 V | 1700 | 700000 | 1200 | 8.5 mA |
Application Notes
Sylvania type 7B7 is a triple-grid remote cut-off amplifier suitable for HF or MF service in AC, universal, or automotive receivers.
Datasheets
Datasheet: 7B7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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