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Tube Database (1,270 tubes)

Other (7066), Pre (189), Power (67), Rectifier (19)
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313 C/F

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BrandWestern Electric
ClassCold Cathode Gas Triode
BaseSmall 4-pin

Construction

Primary TypeCold Cathode
EnvelopeGlass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage175 V
Grid 1 Voltage85 V
Cathode Current10 mA

Audio Performance

Key Features
  • Gas-filled
  • Cold cathode
  • Trigger tube
  • Requires no heater power

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Nominal Triggering150V---10mA

Application Notes

Commonly used in telephone switching systems as a relay or trigger device.

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