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Tube Database (7,341 tube types · 1,270 archive entries)

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

576A

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BrandCentral Electronic Manufacturers
ClassHigh vacuum rectifier and clipper diode
Base4-pin

Construction

Primary TypeDiode
Rectifier TypeHigh vacuum
EnvelopeT-18
Base MaterialMetal shell
SectionsSingle

Filament / Heater

MaterialThoriated Tungsten

Absolute Maximum Ratings

Plate Voltage25000 V
Cathode Current12000 mA

Audio Performance

Key Features
  • Rugged compact design
  • Thoriated Tungsten filament
  • High vacuum
  • Greater ruggedness in anode support

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Rectifier Service25000 V———500 mA
Clipper Service25000 V———800 mA

Application Notes

Mount vertically with adequate air space for ventilation. Anode temperature should not exceed 800°C. Base fits a standard 4 pin super jumbo wafer socket.

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