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
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Nominal Triggering | 150V | - | - | - | 10mA |
Application Notes
Commonly used in telephone switching systems as a relay or trigger device.
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