Tube-number record
2C39BA
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2C39BA is a tube type in the TubeDatabase archive (class: Scheibentriode). Recorded specifications: brand SIEMENS, construction Triode, socket Planar / disc seal, maximum plate voltage 1000 V, and maximum plate dissipation 100 W. The archive does not yet hold a photographed example of this type.
BrandSIEMENS
ClassScheibentriode
BasePlanar / disc seal
Filament6 V @ 975 mA
Construction
Primary TypeTriode
EnvelopeMetal-Ceramic
SectionsSingle
Filament / Heater
Warm-up Time60s
Heater NotesIndirect heating, parallel supply; 0.9 to 1.05 A range.
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Characteristics | 600 V | 25000 | — | 100 | 75 mA |
| CW Oscillator 2.5 GHz | 600 V | — | — | — | 100 mA |
| CW Oscillator 2.5 GHz (High) | 800 V | — | — | — | 100 mA |
Application Notes
Designed for oscillators, modulators, power mixers, and amplifiers up to 3.5 GHz. Heater voltage should be adjusted for high frequency/cathode current demands.
Datasheets
Datasheet: 2C39BA.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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