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

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16A5 vacuum tube outline illustration

Tube-number record

16A5

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16A5 is a tube type in the TubeDatabase archive (class: Frame Time Base and Sound Output Tube). Recorded specifications: brand PHILIPS, construction Pentode, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.

BrandPHILIPS
ClassFrame Time Base and Sound Output Tube
Base
Noval (B9A)
Filament16.5 V @ 300 mA

Construction

Primary TypePentode
EnvelopeT6.5
Sectionssingle

Filament / Heater

Heater NotesCoated unipotential cathode

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage250 V
Grid 1 Voltage-1.3 V
Cathode Current75 mA
H-C Voltage200 V

Audio Performance

Typical THD10%
Power Output4.2 W
Key Features
  • Frame time base
  • Sound output tube
  • High transconductance

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Sound Output Amplifier (Single)170 V9000200001053 mA
Class A Sound Output Amplifier (Single)200 V7600240001045 mA

Application Notes

Circuit should be designed around a peak plate current not exceeding 90 mA at plate voltage of 50 V and Grid 2 voltage of 170 V for frame output application.

Datasheets

Datasheet: 16A5.pdf

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

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