Tube-number record
7AF7
0 archive entries
7AF7 is a tube type in the TubeDatabase archive (class: Double Triode Amplifier). Recorded specifications: brand Sylvania, construction Triode, socket Loctal, maximum plate voltage 300 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.
BrandSylvania
ClassDouble Triode Amplifier
BaseLoctal
Filament7 V @ 0.32 mA
Construction
Primary TypeTriode
EnvelopeT-9
SectionsDouble
Filament / Heater
Heater NotesNominal rating; typical operation at 6.3V / 0.300A
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A, Per Section | 100 V | 2600 | 6500 | 17 | 10.8 mA |
| Class A, Per Section | 100 V | 1900 | 8400 | 16 | 5 mA |
| Class A, Per Section | 250 V | 2100 | 7600 | 16 | 9 mA |
Application Notes
Designed for use as a phase inverter or voltage amplifier. Performance characteristics are similar to Type 7N7 but with lower interelectrode capacities.
Datasheets
Datasheet: 7AF7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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