Tube-number record
2-50A
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BrandEimac
ClassHigh-Vacuum Rectifier
Base4-pin
Construction
Primary TypeDiode
Rectifier TypeHigh-Vacuum
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage30000 V
Plate Dissipation30 W
Cathode Current75 mA
Audio Performance
Key Features
- Thoriated-tungsten filament
- Convection and radiation cooling
- High peak inverse voltage rating
- High-vacuum diode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Capacitor-input filter, Single-phase Half-wave | 10400 V | — | 1000 | — | 60 mA |
| Choke-input filter, Single-phase Bridge (4 tubes) | 21200 V | — | 1000 | — | 150 mA |
Application Notes
The 2-50A is intended for use in rectifier units, voltage multipliers, or in special applications where extreme ambient temperatures or high frequency transients prevent use of gas-filled tubes. Must be mounted vertically.