Tube-number record
25T
0 archive entries
25T is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand Eimac, construction Triode, base Small 4-pin, RMA type A4-5, socket 4-pin, maximum plate voltage 2000 V, and maximum plate dissipation 25 W. The archive does not yet hold a photographed example of this type.
BrandEimac
ClassPower Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialSmall 4-pin, RMA type A4-5
Sections1
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class-C Telegraphy | 2000 V | 2500 | — | 25 | 63 mA |
| Class-C Telegraphy | 1500 V | 2500 | — | — | 67 mA |
| Class-AB2 | 1250 V | — | — | — | 24 mA |
Application Notes
Intended for use as an amplifier, oscillator or modulator. Operates at a visible red color at maximum dissipation.
Datasheets
Datasheet: 25T.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results