Tube-number record
250TH
0 archive entries
250TH is a tube type in the TubeDatabase archive (class: High-Mu Power Triode). Recorded specifications: brand EIMAC, construction Triode, socket 4-pin, maximum plate voltage 4000 V, and maximum plate dissipation 250 W. The archive does not yet hold a photographed example of this type.
BrandEIMAC
ClassHigh-Mu Power Triode
Base4-pin
Construction
Primary TypeTriode
Envelopeglass
Sectionssingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage4000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radio Frequency Power Amplifier Class-C Telegraphy | 2000 V | 5600 | — | 37 | 357 mA |
| Radio Frequency Power Amplifier Class-C Telegraphy | 3000 V | 5600 | — | 37 | 333 mA |
| Radio Frequency Power Amplifier Class-C Telegraphy | 4000 V | 5600 | — |
Application Notes
Intended for use as an amplifier, oscillator or modulator. The plates of the 250TH operate at a visibly red color at the maximum rated dissipation of 250 watts.
Datasheets
Datasheet: 250TH.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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