Tube-number record
EAF 801
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BrandTELEFUNKEN
ClassRegelbare HF- und ZF-Pentode mit Diode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialGlass
SectionsDouble
Filament / Heater
Heater NotesIndirectly heated, parallel or series connection
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.25 W
Grid 2 Voltage300 V
Cathode Current16.5 mA
H-C Voltage100 V
Audio Performance
Key Features
- Remote cutoff RF/IF pentode
- Single diode included
- Pico9/Noval base
- Normalized heater warm-up time
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Measuring Value 1 | 250 V | 4500 | 900000 | — | 9 mA |
| Pentode Measuring Value 2 | 250 V | 3800 | 1000000 | — | 9 mA |
| RF/IF Amplifier Operation 1 | 200 V | 4500 | 650000 | — | 9 mA |
Application Notes
If cathode resistor Rk is not capacitively shunted, transconductance is approx 30% lower and plate resistance approx 10% higher.
Datasheets
Datasheet: EAF801.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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