Tube-number record
7AJ7
0 archive entries
7AJ7 is a tube type in the TubeDatabase archive (class: Sharp Cut-off RF Pentode). Recorded specifications: brand Sylvania, construction Pentode, socket Loctal, maximum plate voltage 300 V, and maximum plate dissipation 1 W. The archive does not yet hold a photographed example of this type.
BrandSylvania
ClassSharp Cut-off RF Pentode
BaseLoctal
Filament7 V @ 0.32 mA
Construction
Primary TypePentode
EnvelopeT-3
SectionsSingle
Filament / Heater
Heater NotesNominal rating 7.0V/0.32A; Typical operation at 6.3V/0.3A
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 100 V | 2275 | 400000 | — | 5.7 mA |
| Class A1 Amplifier | 250 V | 1575 | 1000000 | — | 2.2 mA |
Application Notes
Designed specially for use in AC receivers and in the first stages of high gain amplifiers. Electrical characteristics are almost identical to Type 6SJ7 and identical with Sylvania Type 14C7 except for heater rating.
Datasheets
Datasheet: 7AJ7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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