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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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Tube-number record

45A5

0 archive entries

45A5 is a tube type in the TubeDatabase archive (class: Power Amplifier Pentode). Recorded specifications: brand Philips, construction Pentode, socket Subminiature, maximum plate voltage 250 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassPower Amplifier Pentode
BaseSubminiature
Filament45 V @ 100 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesSeries heater string

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Pentode200 V8200240001045 mA

Application Notes

Power amplifier pentode commonly used in series-string heater receivers.

Datasheets

Datasheet: 45A5.pdf

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

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Manufacturers

Brands

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    Plate Dissipation9 W
    Grid 2 Voltage250 V
    Cathode Current75 mA
    H-C Voltage150 V

    Audio Performance

    Typical THD10%
    Power Output4.2 W
    Key Features
    • Unipotential cathode
    • Any mounting position