Tube-number record
75TH
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75TH is a tube type in the TubeDatabase archive (class: Transmitting Triode). Recorded specifications: brand Eimac, construction Triode, socket 4-pin, maximum plate voltage 3000 V, and maximum plate dissipation 75 W. The archive does not yet hold a photographed example of this type.
BrandEimac
ClassTransmitting Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class-C Telegraphy | 1000 V | 4150 | — | 20 | 215 mA |
| Class-C Telegraphy | 1500 V | — | — | — | 167 mA |
| Class-C Telegraphy | 2000 V | — | — | — | 150 mA |
Application Notes
The Eimac 75TH is a medium-mu transmitting triode intended for amplifier, oscillator, and modulator service. Plate operates at a visibly red temperature at maximum dissipation.
Datasheets
Datasheet: 75TH.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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