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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

E 408N

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BrandPhilips Miniwatt
ClassPower Triode

Construction

Primary TypeTriode
EnvelopeGlass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage400 V
Plate Dissipation12 W
Grid 1 Voltage-2 V
Cathode Current60 mA

Audio Performance

Power Output2.6 W
Key Features
  • Directly heated
  • Power valve
  • Endstufe
  • Tube final

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Normal400 V270030008.130 mA

Application Notes

Output power measured at Grid effective voltage of 35V and load resistance of 6000 Ohms.

Datasheets

Datasheet: E408N.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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