Tube-number record
WL-7430
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WL-7430 is a tube type in the TubeDatabase archive (class: Sharp-cutoff pentode). Recorded specifications: brand Westinghouse, construction Pentode, socket Flexible / flying leads, maximum plate voltage 180 V, and maximum plate dissipation 1.7 W. The archive does not yet hold a photographed example of this type.
BrandWestinghouse
ClassSharp-cutoff pentode
BaseFlexible / flying leads
Filament6.3 V @ 200 mA
Construction
Primary TypePentode
EnvelopeRuggedized, flying leads
Sections1
Filament / Heater
MaterialCoated Unipotential
Absolute Maximum Ratings
Plate Voltage180 V
Plate Dissipation1.7 W
Grid 2 Voltage140 V
Cathode Current18 mA
Audio Performance
Key Features
- Sharp-cutoff pentode
- Wide-band, high-frequency amplifier
- Rugged envelope
- Printed circuit tube
- Reduced lead inductance
- Flying leads for soldering
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Wide-band amplifier | 120 V | 5000 | 300000 | — | 7.5 mA |
| Wide-band amplifier | 180 V | 5100 | 500000 | — | 7.7 mA |
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