Tube-number record
1T4WA
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BrandTung-Sol
ClassRF Pentode
BaseMiniature 7-pin (B7G)
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialMiniature Button
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage100 V
Plate Dissipation0.4 W
Grid 2 Voltage75 V
Cathode Current6.5 mA
Audio Performance
Key Features
- Low microphonic noise
- Semi-remote cutoff
- Mechanical shock resistant
- Designed for military electronic equipment
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal Operation | 90 V | 900 | 170000 | — | 3.5 mA |
Application Notes
The tube is particularly useful in voltage amplifier circuits for battery operated equipment where extreme conditions of mechanical shock or vibration are encountered.
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