Tube-number record
E84L
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BrandSiemens
ClassPower Pentode
BaseNoval (B9A)
Filament6.3 V @ 760 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect, AC or DC, Parallel supply
Absolute Maximum Ratings
Plate Voltage450 V
Plate Dissipation13.5 W
Grid 2 Voltage450 V
Grid 1 Voltage-100 V
Cathode Current75 mA
H-C Voltage100 V
Audio Performance
Typical THD10%
Power Output6 W
Key Features
- Long service life
- Shock and vibration resistance
- Reliability
- Special cathode free of intermediate layers
- Heater-filament switching stability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 250 V | 11300 | 40000 | 19 | 48 mA |
| Pentode Low Current | 250 V | 10400 | 40000 | 19 | 36 mA |
| Triode Connected | 250 V | 10200 | 1800 | 18.5 | 34 mA |
Application Notes
High transconductance power pentode suitable for audio and wideband amplifiers in single-ended or push-pull configurations, cathode followers, and series regulator tubes.
Datasheets
Datasheet: E84L.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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