Tube-number record
8CX8
0 archive entries
8CX8 is a tube type in the TubeDatabase archive (class: Receiving Tube). Recorded specifications: brand Tung-Sol, year 1957, construction Multi-section, base Small Button, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 5 W. The archive does not yet hold a photographed example of this type.
BrandTung-Sol
ClassReceiving Tube
BaseNoval (B9A)
Filament8 V @ 0.6 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Base MaterialSmall Button
Sections2
Filament / Heater
Heater NotesControlled warm-up cycle
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section Class A1 | 170 V | 10000 | 70000 | — | 24 mA |
| Triode Section Class A1 | 150 V | 4600 | 8700 | 40 | 9.2 mA |
Application Notes
The 8CX8 is identical to the 6CX8 except for heater ratings and warm-up time.
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