Tube-number record
EL85
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BrandMullard
ClassOutput Pentode
BaseNoval (B9A)
Filament6.3 V @ 200 mA
Construction
Primary TypePentode
EnvelopeGlass
Sectionssingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation6 W
Grid 2 Voltage300 V
Grid 1 Voltage-100 V
Cathode Current35 mA
H-C Voltage100 V
Audio Performance
Typical THD10%
Power Output2.55 W
Key Features
- Mobile equipment application
- RF amplifier up to 120Mc/s
- Audio frequency output valve
- 6W anode dissipation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Single Valve | 200 V | 3200 | 90000 | — | 22.5 mA |
| Class A Single Valve | 250 V | 3100 | 100000 | — | 24 mA |
| Class AB Push-Pull | 250 V | — | 12000 | — | 40 mA |
Datasheets
Datasheet: EL85.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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