S340
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BrandSYLVANIA
ClassCold Cathode Trigger Tube
BaseSmall 4-Pin Ceramic
Construction
Primary TypeCold Cathode
EnvelopeGlass
Base MaterialCeramic
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1300 V
Grid 1 Voltage400 V
Audio Performance
Key Features
- Inert-gas-filled
- Internally-triggered
- Cold cathode
- Ruggedized
- Shock resistant
- Vibration resistant
- High altitude capability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Relay and Switching | 1000V | - | - | - | - |
Application Notes
The Sylvania Type S340 is an inert-gas-filled internally-triggered cold cathode trigger tube designed for electronic relay and switching service. It is similar to the OA5 but capable of higher peak and average currents. Ideal for jet engine ignition systems and high-altitude flight applications.
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