COLD CATHODE SIGN INDICATOR TUBE
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ClassIndicator Tube
BaseB13B
FilamentV @ mA
Construction
Primary TypeCold Cathode
EnvelopeSide viewing glass with red contrast filter
Base MaterialGlass
Sections2 cathodes (+ and -), 1 common anode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage170 V
Cathode Current6 mA
Audio Performance
Key Features
- Side viewing
- Red neon glow
- Red contrast filter
- Physical dimensions identical to ZM1040
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal Operation | 170V | - | - | - | 4.5mA |
Application Notes
Pins 1 and 2 must be interconnected externally. Bulb temperatures below 10°C result in reduced life expectancy. Constant current operation is recommended for wide temperature ranges.
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