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

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Tube-number record

AL 4

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BrandPhilips
ClassOutput Pentode
BaseSide-contact (P-base)
Filament4 V @ 1750 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesIndirect; A.C.; parallel supply

Absolute Maximum Ratings

Audio Performance

Key Features
  • Indirectly heated
  • Side-contact base

Application Notes

For the data and characteristics of the AL 4, see EL 3 N.

Datasheets

Datasheet: AL4.pdf

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

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