Tube-number record
35Y4
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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.
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
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| With 40 mfd input condenser and #40 or #47 panel lamp | 117 V | — | 15 | — | 60 mA |
| With 40 mfd input condenser and no panel lamp | 117 V | — | 15 | — | 100 mA |
Application Notes
Intended for half-wave power rectifier service. Features a tapped heater for ballast action and panel lamp voltage.
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