Tube-number record
7492
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BrandBrimar
ClassDouble Triode
BaseNoval (B9A)
Filament12.6 V @ 0.15 mA
Construction
Primary TypeDual triode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesPure tungsten heater; center-tap on pin 9
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2 W
Cathode Current22 mA
H-C Voltage100 V
Audio Performance
Key Features
- High slope
- Special rugged electrode construction
- Cathode interface resistance inhibited
- Pure tungsten heater
- Low leakage levels
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Each Section | 250 V | 5500 | — | 60 | 10 mA |
Application Notes
Independent sections for use in both RF and computer applications. Designed for long periods of operation under cut-off conditions.
Datasheets
Datasheet: 7492.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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