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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

Z70W

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ClassCold-cathode trigger tube
BaseSubminiature

Construction

Primary TypeOther / special
EnvelopeGlass
SectionsTwo identical starters

Filament / Heater

Absolute Maximum Ratings

Plate Voltage310 V
Cathode Current4 mA

Audio Performance

Key Features
  • Subminiature cold-cathode
  • Dual identical starters
  • Life expectancy > 30,000 hrs
  • Forward and backward counting capability

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
DC typical250 V———3 mA

Application Notes

Characteristics identical to Z70U except for dual starters and slightly higher starter transfer current. Suitable for reset of a counter without additional tubes.

Datasheets

Datasheet: Z70W.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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