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 Material

Glass

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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