Tube-number record
F 9004
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F 9004 is a tube type in the TubeDatabase archive (class: Nixie Tube). Recorded specifications: brand CSF, year 1962, construction Other / special, base Plastic, socket Diheptal, and maximum plate voltage 300 V. The archive does not yet hold a photographed example of this type.
BrandCSF
ClassNixie Tube
BaseDiheptal
Construction
Primary TypeOther / special
EnvelopeGlass
Base MaterialPlastic
Sections10 cathodes (digits 0-9), 1 anode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage300 V
Cathode Current6 mA
Audio Performance
Key Features
- Cold cathode
- Direct reading
- Gas-filled
- Long duration
- Transistor-compatible
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Numerical Indication | 250 V | — | 40000 | — | 2.9 mA |
Application Notes
Recommended anode supply voltage at least 170V. For transistor circuits, a differential voltage of at least 25V is required between the active and inactive cathodes, with 40V or more recommended for optimal results.
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