35A3
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BrandMarconi Italiana
ClassHalf-wave rectifier
Base7-pin miniature
Filament35V @ 150mA
Construction
Primary Typediode
Rectifier Typehalf-wave
EnvelopeT-5 1/2
Base MaterialGlass
Sectionssingle
Filament / Heater
Heater NotesUnipotential Cathode; intended for series string heating arrangement
Absolute Maximum Ratings
Cathode Current100 mA
H-C Voltage450 V
Audio Performance
Key Features
- Miniature type
- Half-wave rectifier
- Power-line autotransformer supply
- Series string heating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Capacitor-Input filter (125V AC Supply) | 125V | - | - | - | 100mA |
| Capacitor-Input filter (220V AC Supply) | 220V | - | - | - | 100mA |
| Capacitor-Input filter (250V AC Supply) | 250V | - | - | - | 100mA |
Application Notes
When a filter-input capacitor larger than 40 uF is used, it may be necessary to use more plate-supply impedance to limit peak plate current.
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