Tube-number record
8013-A
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BrandRadio Corporation of America
ClassHalf-wave vacuum rectifier
Base4-pin
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeST-16
Base MaterialMedium-Shell Small 4-Pin (JETEC No. A4-9)
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage40000 V
Plate Dissipation12 W
Cathode Current20 mA
Audio Performance
Key Features
- Thoriated Tungsten filament
- X-ray production hazard during operation
- Can be immersed in oil for increased inverse voltage (55kV)
- Filament and plate voltage may be applied simultaneously
Application Notes
Bulb must be cleaned regularly to avoid leakage caused by dust. Shielding is required to protect operators from X-rays produced during normal operation.
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