Tube-number record
E 280 F
0 archive entries
BrandSiemens
ClassBreitband-Pentode
BaseNoval (B9A)
Filament6.3 V @ 315 mA
Construction
Primary TypePentode
EnvelopeDIN 41539, Form A, Nenngröße 45
SectionsSingle
Filament / Heater
Heater NotesIndirekt durch Wechsel- oder Gleichstrom, Parallelspeisung
Absolute Maximum Ratings
Plate Voltage220 V
Plate Dissipation4 W
Grid 2 Voltage180 V
Grid 1 Voltage-50 V
Cathode Current30 mA
H-C Voltage60 V
Audio Performance
Key Features
- Long life (> 10,000 hours)
- Reliability (p = 1.5 per 1000 hrs)
- Tight tolerances
- Shock and vibration resistance
- Special cathode without interface layer
- Heater-filament switching stability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Operation | 190 V | 26000 | 400000 | 60 | 20 mA |
| Triode Operation | 160 V | 33000 | 1800 | 60 | 24 mA |
Application Notes
Particularly suitable for LF, IF and HF amplifiers in pre- and output stages, cathode followers, mixers, oscillators and frequency multipliers up to 300 MHz.
Datasheets
Datasheet: E280F.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results