Tube-number record
7643
0 archive entries
7643 is a tube type in the TubeDatabase archive (class: Triode-Pentode). Recorded specifications: brand Amperex, construction Multi-section, socket Noval (B9A), maximum plate voltage 275 V, and maximum plate dissipation 2.15 W. The archive does not yet hold a photographed example of this type.
BrandAmperex
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 330 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections2
Filament / Heater
Absolute Maximum Ratings
Plate Voltage275 V
Plate Dissipation2.15 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 100 V | 5000 | — | 18 | 14 mA |
| Pentode Section | 170 V | 6200 | 400000 | 40 | 10 mA |
Application Notes
The pentode section is designed for use as a mixer, RF or AF amplifier. The triode section is designed for use as an oscillator up to 300 Mc/s, multivibrator or blocking oscillator.
Datasheets
Datasheet: 7643.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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