Tube-number record
C3E
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C3E is a tube type in the TubeDatabase archive (class: NF-, HF-Pentode). Recorded specifications: brand Siemens, construction Pentode, socket Special / none, maximum plate voltage 300 V, and maximum plate dissipation 5 W. The archive does not yet hold a photographed example of this type.
BrandSiemens
ClassNF-, HF-Pentode
BaseSpecial / none
Filament18 V @ 240 mA
Construction
Primary TypePentode
EnvelopeGlass
Filament / Heater
Heater NotesIndirect, parallel feeding
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation5 W
Grid 2 Voltage300 V
Grid 1 Voltage-1.3 V
Cathode Current45 mA
H-C Voltage120 V
Audio Performance
Key Features
- NF-Pentode
- HF-Pentode
- Oxide Cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 100 V | 2500 | 900000 | — | 8.5 mA |
| Pentode | 220 V | 4400 | 500000 | — | 18.5 mA |
| Pentode | 300 V | 3700 | 900000 | — | 15 mA |
| Triode | 300 V | 4400 | 5900 | 26 | 14.5 mA |
Application Notes
Heizart: indirekt, Parallelspeisung
Datasheets
Datasheet: C3e.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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