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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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35Y4 vacuum tube outline illustration

Tube-number record

35Y4

0 archive entries

35Y4 is a tube type in the TubeDatabase archive (class: Half-wave Power Rectifier). Recorded specifications: brand TUNG-SOL, year 1948, construction Diode, base Lock-In, socket Loctal, and maximum plate voltage 235 V. The archive does not yet hold a photographed example of this type.

BrandTUNG-SOL
ClassHalf-wave Power Rectifier
BaseLoctal
Filament35 V @ 150 mA

Construction

Primary TypeDiode
Rectifier TypeHalf-wave
EnvelopeT-9 Glass Bulb
Base MaterialLock-In
SectionsSingle

Filament / Heater

Heater NotesCoated unipotential cathode; includes a tapped heater section for panel lamp ballast action.

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
With 40 mfd input condenser and #40 or #47 panel lamp117 V—15—60 mA
With 40 mfd input condenser and no panel lamp117 V—15—100 mA

Application Notes

Intended for half-wave power rectifier service. Features a tapped heater for ballast action and panel lamp voltage.

Filters

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Manufacturers

Brands

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    Absolute Maximum Ratings

    Plate Voltage235 V
    Cathode Current100 mA
    H-C Voltage300 V

    Audio Performance

    Key Features
    • Lock-in construction
    • Tapped heater section
    • Panel lamp source
    • Any mounting position