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

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Tube-number record

UU.6

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BrandMazda
ClassFull Wave Rectifier
BaseOctal
Filament4 V @ 1.4 mA

Construction

Primary TypeIndirectly heated
Rectifier TypeFull-wave
EnvelopeMetallised
SectionsDouble Anode

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage350 V
Cathode Current120 mA

Audio Performance

Key Features
  • Small dimensions
  • Metallised bulb
  • Indirectly heated
  • Suitable for mains portable receivers

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Full Wave Rectifier300 V———60 mA
Full Wave Rectifier350 V———60 mA
Full Wave Rectifier300 V———90 mA

Application Notes

The bulb is of small dimensions and metallised. Suitable for mains portable receivers or where rectifier hum trouble is experienced due to cramped layout. D.C. output is not increased by changing from 8 to 16 uF, but hum ripple is reduced.

Datasheets

Datasheet: UU6.pdf

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

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    Full Wave Rectifier350 V———90 mA
    Full Wave Rectifier300 V———120 mA
    Full Wave Rectifier350 V———120 mA