Tube-number record
8445
0 archive entries
8445 is a tube type in the TubeDatabase archive (class: Triode Pentode). Recorded specifications: brand Tung-Sol, year 1963, construction Pentode, base Miniature Button, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 2 W. The archive does not yet hold a photographed example of this type.
BrandTung-Sol
ClassTriode Pentode
BaseNoval (B9A)
Filament6.75 V @ 440 mA
Construction
Primary TypePentode
EnvelopeGlass (JEDEC 6-2)
Base MaterialMiniature Button
Sections2
Filament / Heater
Heater NotesDesigned to be operated from an automotive battery; applied voltage range 6.0 to 7.5 V
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode | 100 V | 7000 | — | 43 | 12.5 mA |
| Pentode | 170 V | 6200 | 400000 | — | 10 mA |
Application Notes
Contains a medium mu triode and a sharp cut-off high-frequency pentode. Adapted for mobile communications equipment.
0 results