Tube-number record
7494
0 archive entries
7494 is a tube type in the TubeDatabase archive (class: Double Triode). Recorded specifications: brand BRIMAR, construction Dual triode, base Small button, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 1.2 W. The archive does not yet hold a photographed example of this type.
BrandBRIMAR
ClassDouble Triode
BaseNoval (B9A)
Filament12.6 V @ 0.15 mA
Construction
Primary TypeDual triode
EnvelopeGlass
Base MaterialSmall button
Sections2
Filament / Heater
Heater NotesPure tungsten heater designed to withstand frequent heater switching.
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 250 V | 1600 | 59000 | 95 | 1.25 mA |
Application Notes
For use in A.F. and control applications. Designed for high reliability and long life under cut-off conditions.
Datasheets
Datasheet: 7494.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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